Carnitine plays a role in energy metabolism and is an ingredient in medicines, dietary supplements, and skincare products. It is being studied in cardiovascular and metabolic disease, and in dermatology it is considered in three roles: as a component of products for aesthetic goals, as potential support during treatment, and as a candidate biomarker. Yet there is a substantial difference between biochemical function, marketing claims, and clinical effect. A 2026 systematic review pooled 59 publications and showed why a multi-ingredient product's results can't be attributed to a single ingredient, and why changes in carnitine levels aren't an indication to take it. We break down the possibilities and the limits in our editorial note.

Hypertrophic scars do not all respond to laser treatment in the same way: one may become softer and lighter, while another changes little—or some measures may even worsen. Understanding why matters both when discussing treatment with patients and when considering how to approach a weak response. A study published in Communications Medicine (2026) compared clinical response to ablative fractional CO₂ laser treatment with scar-cell composition, using single-cell RNA sequencing. A scar is not a uniform mass of fibrous tissue but a community of cells. The researchers identified five fibroblast subsets, present in different proportions across participants. A good response was associated with more organized matrix remodeling, while a weak response was accompanied by persistent inflammatory infiltration and differences in inferred cell-signaling networks. Read the full analysis and practical takeaways in our editorial note.

Nicotinamide is a form of vitamin B3 used to correct deficiency, including pellagra. Interest in preventing skin cancer grew from its role in cellular energy metabolism and from a phase III randomized trial, ONTRAC, which showed a preventive effect in high-risk patients. A later trial, ONTRANS, in patients with a history of organ transplantation did not confirm that result. Recently, data from almost 34,000 patients brought the topic back into focus: nicotinamide use was associated with a 14% lower risk of subsequent tumors. But a large sample does not remove systematic bias. What do these percentages mean, and are they enough for practical recommendations? The evidence and its practical implications are in our editorial note.

Ceramides have long been synonymous with barrier-focused skincare, but how much does their molecular structure really matter? A 2026 study in the Journal of Cosmetic Dermatology showed that what matters may be not only the presence of ceramides in a cream, but also the length of their fatty-acid chain. On healthy skin, a blend of ultra-long-chain ceramides C24–C30 accelerated barrier recovery after damage and, more markedly than the classic ceramide C18, improved hydration and stratum corneum cohesion. Full details — in our editorial note.

Adipose tissue is far more than an inert fuel depot: it functions as a fully immunocompetent organ deeply integrated into systemic immunity. Macrophages serve as central coordinators within this tissue, operating at the crossroads of lipid metabolism, remodeling, and local inflammation. A comprehensive recent review reveals that in obesity, macrophages expand from roughly 10% to nearly 40% of all resident immune cells. While certain subsets process excess lipids and clear dying adipocytes, others drive sustained low-grade inflammation. Complementing this, a multi-omics study in 125 patients with obesity demonstrated that dyslipidemia significantly shifts gene expression tied to inflammation, oxidative stress, and adipogenesis—surprisingly, with the most pronounced changes occurring in subcutaneous fat rather than visceral depots. What does this mean for aesthetic practitioners targeting subcutaneous tissue? Read the full analysis in our editorial review.

Hydroxy acids have long been used to promote skin renewal, but their effects on the skin microbiome remain far less studied. In a narrative review, Polish researchers compare how different groups of hydroxy acids affect the epidermal barrier and bacterial communities. Laboratory models show that hydroxy acids can inhibit pathogen growth and disrupt bacterial biofilms. The authors caution, however, against extrapolating these findings directly to living skin: bacteria in vivo are better protected than those in laboratory cultures, sheltered by the skin barrier, biofilms, and pilosebaceous follicles. Excessive exfoliation may also trigger secondary dysbiosis and increase water loss. Which proposed mechanisms are supported by evidence, which remain hypotheses, and how can practitioners preserve microbial balance when using exfoliating acids? Read our editorial review for the full analysis and practical takeaways.

Vitamin D has long been part of topical psoriasis treatment, but how does it work? A review in Acta Physiologica offers a fresh perspective: vitamin D may act directly on sensory nerves in the skin to modulate neurogenic inflammation. These neurons carry vitamin D receptors (VDR) and release calcitonin gene-related peptide (CGRP), a neuropeptide associated with redness, swelling, and itch. Experimental findings suggest that vitamin D metabolites may reduce CGRP and interleukin-6 (IL-6) release, while also modulating the transient receptor potential vanilloid 1 (TRPV1) ion channel involved in itch and pain. This remains a hypothesis, based mainly on cell and animal models, but it points to new questions—and potential targets—for future research into psoriasis and atopic dermatitis. Read our editorial review of the study and its practical takeaways.

Excruciating itch, severe dryness, and inflammation are the leading clinical manifestations of atopic dermatitis (AD) and significantly reduce patients' quality of life. Alongside topical therapy, dermatologists use phototherapy, but researchers are increasingly turning their attention to laser technologies. The authors of a new review pooled data from 27 publications to assess the real capabilities of lasers in AD. In preclinical models, excimer (308 nm) and low-level radiation demonstrate marked anti-inflammatory and antipruritic potential, but in real-world clinical practice the evidence base is so far represented primarily by individual observations and pilot series. What are the prospects for laser exposure, and why do practical conclusions currently require maximum caution? We examine this in our editorial note.

Androgenetic alopecia is the most common cause of hair loss: follicles miniaturize, the growth phase shortens, and standard therapy does not help everyone. Researchers are now turning to exosomes — nanoscale vesicles that carry signaling molecules between cells. A new review in the International Journal of Nanomedicine examines how exosomes affect key hair-follicle signaling pathways and analyzes the first clinical studies: exosome injections and topical application after microneedling. Density gains ranged from 7.3 to 35 hairs/cm², with no serious adverse events reported. But sample sizes were small, there were no control groups, and protocols varied. We break down what has been shown — and what remains a hypothesis. Full details in our editorial review.

Stimulating fibroblasts with device-based and injectable methods is a cornerstone of most anti-aging protocols. However, chronic immune signaling in aging skin may suppress the fibroblast response to these interventions. A new study by Japanese researchers, published in August 2026 in the Journal of Investigative Dermatology, highlights the role of dermal IgG antibodies: they accumulate in the skin with age—human tissue samples showed a strong positive association—and initiate a local inflammatory cascade. The sequence “IgG → macrophages → interleukin-12 → T cells → interferon-gamma” suppresses the expression of collagen-related genes in fibroblasts. Understanding this mechanism offers a new perspective on skin’s potential resistance to collagen-stimulating treatments and identifies possible future pharmacological targets for anti-aging therapy. A detailed analysis of the mechanisms and their practical relevance is available in our editorial feature.

Persistent scalp redness, dry flaking, burning, and complaints of increased hair loss are often treated for years as seborrheic dermatitis or contact dermatitis without success. Yet this picture may hide scalp rosacea — an inflammatory non-scarring dermatosis that remains poorly understood and often escapes clinicians' attention. Why does the absence of facial papules not rule out scalp involvement, which trichoscopic patterns help recognize the disease, and what therapeutic approaches do current authors propose? Full review and practical takeaways — in our editorial note.

Sleeping nociceptors — mechanoinsensitive C-fibers of the skin — have long been studied in the context of neuropathic pain. Yet their molecular profile turned out to be directly relevant to dermatology: the identified nociceptor population C-OSMR-SST carries histamine receptors (HRH1), interleukin-31 receptors (IL31RA) and JAK1 — the same molecules involved in itch in inflammatory skin diseases. Authors of an article published in Cell (2026) showed that oncostatin M, the ligand of OSMR, selectively modulates these fibers in healthy people and enhances histamine-induced flare. For skincare specialists and dermatologists, this matters: JAK inhibitors are already used as antipruritic agents, and understanding how OSMR/JAK1 signaling controls skin sensitivity opens new avenues for studying itch, redness, and skin discomfort. Full analysis and practical takeaways — in our editorial note.

Poly-D, L-lactic acid (PDLLA) has long been used in aesthetic medicine as a biostimulatory filler for facial rejuvenation. It turns out the same mechanism may work for hair, too. In a new laboratory study, researchers examined how PDLLA affects aged hair follicle cells — first in cell culture, then in a mouse model. The results showed that PDLLA reduced oxidative stress, restored the cells' ability to divide, and triggered keratin production, the building blocks of hair. In animals, this translated into improved hair thickness and shine. The authors are candid about the caveats: these are preclinical findings from cells and mice, not results from treating humans. Our editorial note covers the full picture and the researchers' caveats.

Growing resistance of Staphylococcus aureus to antibiotics is driving the search for local approaches to bacterial control that do not rely on conventional drug mechanisms. In a pilot study published in Photodiagnosis and Photodynamic Therapy in February 2026, a combination of methylene blue, red light, and ultrasound reduced the number of viable bacteria on intact skin by more than 100-fold. The authors evaluated photodynamic and sonodynamic therapy stepwise, from laboratory experiments to clinical assessment in healthy volunteers. The findings suggest that this approach may be a valuable additional tool for local control of bacterial contamination. Details are presented in our editorial note.

Taxanes are among the most effective chemotherapy drugs, but their effects are not limited to tumor cells. The rapidly dividing cells of hair follicles are particularly vulnerable, which is why alopecia develops in most patients and remains one of the most distressing treatment-related adverse effects. Researchers are looking for ways to protect hair without compromising the effectiveness of cancer therapy — from scalp cooling to cyclin-dependent kinase inhibitors. One emerging approach is short-term exposure to low-intensity ultrasound, which may temporarily disrupt drug-induced rigid microtubules and thereby eliminate their toxic effect on follicular cells. Read the full story in our editorial feature.

It turns out that skin condition can be "read" through the level of a single amino acid. Serine is the main component of the stratum corneum's natural moisturizing factor, and its shortage accompanies dryness, atopic dermatitis, and psoriasis. Researchers have developed a wearable sensing patch built with a molecularly imprinted polymer—a material with molecular "fingerprints" of serine that selectively captures this amino acid. Within 5 minutes, the patch non-invasively measures serine content in the skin and transmits the data to a portable reader. The technology has already demonstrated how serine levels shift during skin barrier recovery and after applying a moisturizing essence. Full details in our editorial note.

Glycation is one of the key yet underappreciated mechanisms of skin aging: sugars bind irreversibly to collagen and elastin, making them stiff and vulnerable. Can this process be slowed using components already familiar to skincare specialists? A review published in Clinical, Cosmetic and Investigational Dermatology examines how hyaluronic acid and trehalose — a sugar with unique protective properties — work together, mutually enhancing antioxidant and anti-glycation effects. We break down the mechanism behind this synergy and the prospects it opens for aesthetic medicine. Full details — in our editorial note.

Tretinoin (9-cis retinoic acid) is an effective anti-photoaging agent. Still, it is classified as a pharmaceutical drug: excessive activation of the RARγ/RXR receptor causes irritation, erythema, and heightened skin sensitivity, which is why tretinoin is not used in cosmetics. The search continues for retinoic acid derivatives that retain efficacy while being better tolerated by the skin, and one promising candidate has emerged — hydroxypinacolone 9-cis retinoate, a synthetic tretinoin analog with an unusual bent molecular structure. A new study using a photoaging model shows that this compound restores collagen and elastin synthesis, normalizes the skin's cellular composition, curbs excess pigmentation, and does not cause irritation. In a clinical trial, its effect was comparable to or exceeded that of retinol. Full details in our editorial note.

Psoriasis is a chronic inflammatory skin disease driven by dysregulated immune responses. Despite decades of research, the precise chemical profile of psoriatic skin has remained incomplete. A new metabolomic study published in the International Journal of Biological Sciences in 2026 mapped metabolic changes in psoriatic lesions: across 60 skin samples, the authors identified 707 metabolites with altered levels and found three compounds—citrate, L-tyrosine, and purine—whose levels positively correlated with disease severity. Systemic administration of citrate and L-tyrosine intensified inflammation in a mouse model of psoriasis, whereas purine showed no significant effect. The findings may inform the assessment of disease severity and the search for new therapeutic targets. Read our editorial analysis for the study’s practical implications.

Keloids remain one of the most challenging types of pathological scarring to manage. While intralesional injections of triamcinolone (TAC) and 5-fluorouracil (5-FU) are standard therapies, practitioners often face a frustrating reality: nearly half of patients do not respond. Why do some scars give in while others persist? Finnish researchers examined the immune microenvironment of 48 keloids before and after therapy. While baseline immune profiles failed to predict outcomes, responders showed a radical shift: anti-inflammatory M2 macrophages (CD163+) significantly accumulated in the dermis—228 vs. 119 cells/mm² in non-responders. This surge inversely correlated with myofibroblast density, the primary drivers of fibrosis. These findings suggest that stimulating M2 polarization could enhance standard injection protocols. At the same time, the more pronounced immune shift seen with TAC supports the priority of corticosteroids when a complete overhaul of the scar’s inflammatory microenvironment is required. Research breakdown and prac...

The ketogenic diet—a high-fat, very-low-carbohydrate regimen—has gained global recognition as a tool for weight loss and metabolic health. But how does the skin respond when the body shifts to ketone-based "fuel"? A 2025 review published in Frontiers in Nutrition systematically analyzed the impact of the ketogenic diet on four major dermatological conditions: acne, psoriasis, hidradenitis suppurativa, and cutaneous melanoma. Molecular analysis reveals that ketone bodies dampen chronic inflammation, protect cells from oxidative stress, and reduce hormonal stimulation of the sebaceous glands. However, long-term adherence may carry risks of vitamin C, biotin, and zinc deficiencies—with direct consequences for skin health. For an in-depth dive, read our full editorial note here.

Isotretinoin is one of the most effective systemic treatments for severe acne — yet for nearly four decades, practitioners have followed a strict rule: no cosmetic procedures for 6 to 12 months after completing a course. That rule traces back to isolated case reports from the 1980s describing atypical keloids and impaired wound healing. But how relevant is it today? A systematic review of 34 studies involving 1,563 patients offers a surprising answer: for most current procedures — laser hair removal, fractional lasers, chemical peels, microneedling — there is no evidence-based justification for such a prolonged waiting period. Full analysis and clinical takeaways in our editorial.

For decades, retinoids — vitamin A derivatives — were thought to work by simply speeding up basal keratinocyte division and accelerating epidermal renewal. A new study published in the Journal of Investigative Dermatology tells a more nuanced story. Rather than acting as a blunt accelerator of cell division, retinoic acid reshapes the balance between distinct epidermal stem cell populations — redirecting their fate and shifting the ratio of slow- to fast-cycling cells. The finding reframes how retinoids work at the cellular level and may inform more rational approaches to their use in dermatology and aesthetic medicine. Read our full editorial note here.

Melasma remains one of the most challenging forms of hyperpigmentation, often involving deep dermal pigment that topical treatments fail to reach effectively. While Tranexamic Acid (TXA) is a powerful tool for inhibiting melanogenesis and inflammation, its success depends on deep delivery. Which method is superior: microneedling or direct intradermal injections? To find out, researchers conducted a randomized trial with 70 patients. Although both approaches yielded results, microneedling emerged as the clear winner by week 12: 82.9% of the microneedling group achieved near clearance compared to just 37.1% in the injection group. Beyond efficacy, there is a key practical advantage—microneedling is accessible to a wider range of skincare professionals. Read the full study breakdown and clinical insights in our editorial note.

Light-based therapies have long been part of the acne treatment toolkit — yet most of them work by targeting bacteria or reducing inflammation, leaving the sebaceous glands themselves largely untouched. A 1726 nm laser takes a different approach: its energy is selectively absorbed by sebum, enabling precise photothermolysis of sebaceous glands while sparing the overlying epidermis. One-year results from a prospective multicenter study are compelling — 91.5% of patients with moderate-to-severe acne achieved a 50% or greater reduction in inflammatory lesions, with the therapeutic effect continuing to build throughout the follow-up period. Full breakdown and clinical takeaways in our editorial.

When identifying the molecular systems that dictate whether a cell maintains its youth or succumbs to aging, the Hedgehog signaling pathway is a primary candidate. An evolutionarily ancient regulator known for its role in embryonic development, Hedgehog acts as a vital guardian of stem cell niches and tissue regenerative potential in adults. In the skin, its activity declines with age, specifically where it is needed most: in hair follicle stem cells, dermal fibroblasts, and wound healing processes. A new review in Experimental & Molecular Medicine (2026) explores how this pathway functions, the consequences of its "silencing," and why its activation represents one of the most promising frontiers in anti-aging research. Detailed analysis and clinical insights — in our editorial note.

Effective wound healing—particularly for chronic, burn, or diabetic lesions—remains a formidable clinical challenge. One unconventional yet promising approach involves studying amphibian skin secretions. Over millions of years, the naked skin of frogs and toads has evolved under the dual pressure of constant pathogen exposure and mechanical injury, necessitating the production of substances that combine antimicrobial defense with pro-regenerative properties. These substances are short peptides. A comprehensive review published by a group of Chinese researchers in 2026 systematizes data on the discovery, mechanisms, and clinical potential of these molecules, while candidly addressing the hurdles on the road from lab to clinic. Full details in our editorial note.

Atopic dermatitis is primarily considered a chronic inflammatory skin disease. However, a new systematic review suggests that patients with this diagnosis may have a higher risk of osteoporosis and fractures. The authors of a meta-analysis published in Annals of Medicine (2026) found a 56% increase in osteoporosis risk and an 8% increase in fracture risk at all sites. The association was most pronounced in severe disease and for vertebral and lower-extremity fractures. What should be considered in clinical practice, and why do these findings require careful interpretation? We discuss this in our editorial review.

  Interest in dietary collagen peptides as a tool for correcting age-related skin changes is growing rapidly: skincare specialists, dermatologists, and their patients are increasingly turning to oral supplements in search of visible skin improvement. Clinical observations support this effect — yet the question "why does it actually work?" has long gone without a comprehensive answer.A new review by Huang et al., published in Molecules (2026), consolidates the accumulated evidence and offers a fresh perspective on the cellular mechanisms of collagen peptide action — with a particular focus on lysosomes and mitochondria as key target organelles [1].   Collagen peptides and skin: what the evidence shows Collagen is the primary structural protein of the skin's extracellular matrix (ECM). Collagen peptides are short chains of 2 to 20 amino acid residues obtained through the hydrolysis of collagen. A substantial body of clinical evidence has now accumulated regarding their efficacy: a large systematic review with meta-analysis, publishe...

What if the skin does more than shield us from the outside world — what if it directs our immune system? That is precisely what a study published in Nature has shown: in response to stress — infection or UV exposure — keratinocytes trigger a molecular cascade that ultimately drives antibody production in the lymph nodes. At the center of this process is the TRPV3 channel: a metabolite that accumulates in stressed cells binds to it, setting off a signaling cascade that mobilizes dendritic cells and follicular T helper cells. When this mechanism functions properly, it protects against infection. When it goes unchecked, it can fuel autoimmune disease — lupus in particular. For dermatologists and skincare specialists, this reframes the meaning of skin stress: it is no longer just a local problem, but a systemic immune trigger. The full breakdown is in our editorial feature.

Psoriasis is one of the most prevalent chronic inflammatory skin diseases, affecting an estimated 2 to 3% of the world's population. Current treatments are far from ideal: topical steroids cause skin atrophy, immunosuppressants pose risks to internal organs, and biologics remain costly and carry the potential for serious adverse events. Scientists from China have proposed an unexpected solution — emodin (a natural plant-derived anthraquinone) encapsulated in liposomes. Liposomal emodin not only penetrates psoriatic plaques more deeply than conventional formulations, but also enables high-resolution visualization and simultaneous treatment via two-photon photodynamic therapy. Central to its action is targeting the mitochondria of pro-inflammatory macrophages — a mechanism that reprograms the immune response from within. Read the full breakdown in our editorial note.

Skin aging is not only a matter of genes — it is also shaped by the molecules that control how those genes behave. Non-coding RNAs — miRNA, lncRNA, and circRNA — carry no protein-coding instructions. Yet, they regulate hundreds of genes, determining whether a fibroblast will divide or enter senescence, whether collagen will be degraded by UV exposure, and whether inflammation will escalate in the dermis. A major review published in Ageing Research Reviews (2026) consolidates the evidence on how these molecules govern skin aging mechanisms — and which of them are already being considered as targets for therapeutic intervention. Approaches under discussion include exosomal delivery, nanoparticles, microneedle patches, and combinations with established anti-aging agents. Early clinical trials are already underway. Full analysis and practical highlights — in our editorial note.

Cellulite affects 85–98% of women and remains one of the most challenging conditions in aesthetic practice. Topical lipolytic enzymes — lipase and collagenase — have a theoretically compelling mechanism of action, yet their clinical potential is limited by a fundamental obstacle: the skin barrier. Molecules larger than ~500 Da cannot penetrate the subcutaneous tissue on their own to reach their primary target — adipocytes. A team of Spanish researchers proposed an unconventional solution: use a radiofrequency (RF) device simultaneously as a therapeutic tool and as a "carrier" for the enzymes. This pilot randomized study, published in 2026, demonstrated that combining RF with topical enzymes yields statistically significantly better outcomes than RF monotherapy. Full analysis and practical takeaways — in our editorial review.

Why do some scars remain barely visible, while others grow into painful, itchy keloids — and keep coming back even after treatment? For a long time, the answer was sought at the level of fibroblasts and collagen. Today, evidence points to a different scale of the problem: immune dysregulation that not only accompanies keloids but also actively sustains them. Authors of a new review in Annals of Medicine have synthesized accumulated data on the role of immune cells, revealing how they create an environment of "silent inflammation" in which fibrosis thrives, and the cells capable of opposing it are blocked. This opens up new therapeutic targets — from suppressing pro-fibrotic signals to restoring lost cytotoxic immune function. Full analysis and practical takeaways — in our editorial note.

Brittle, slow-growing nails are a concern that patients frequently bring to skincare specialists and dermatologists. The market for supplements promising to address this issue is growing rapidly, yet questions about their real-world efficacy remain open. A recent review published in Skin Appendage Disorders (2025) analyzes data on six categories of nail supplements: biotin, collagen peptides, solubilized keratin, choline-stabilized orthosilicic acid, methylsulfonylmethane, and multivitamin formulations. The conclusion: all have a biological rationale, some show promising preliminary data, but none can claim a robust evidence base. And biotin — the most popular ingredient — carries a non-obvious clinical risk. Full breakdown and practical takeaways in our editorial note.

Skin surface lipids — sebum and stratum corneum components — were long regarded simply as a nutrient source for resident microorganisms. The picture is now far more complex: members of the skin microbiome do not merely consume lipids — they transform them and synthesize entirely new ones, actively shaping the skin's lipid landscape. This relationship runs in both directions. That means the lipid composition of topically applied skincare products can be used to selectively influence the microbial community— and, through it, barrier function, immune response, and inflammatory tendency. A recent review in mSphere (June 2026) mapped the mechanisms of this axis and outlined actionable therapeutic strategies. Full analysis and practical takeaways — in our editorial note.

Essential oils have been used in skincare for thousands of years, yet their molecular mechanism of action remained unknown — until now. A study published in Nature Communications has filled this gap: researchers identified citronellal — an acyclic monoterpene found in citronella oil and several other plant essences — as a TRPV3 ion channel agonist that stimulates keratinocyte proliferation. Atomic-resolution structures of TRPV3 complexes with multiple monoterpenes were obtained for the first time, revealing the precise mechanism of receptor activation. The findings give the cosmetic industry and skincare professionals a concrete molecular target for developing anti-aging and regenerative formulations. Full details are in our editorial feature.

Skin and the hair follicle are more than anatomical neighbors. Both develop from the same embryonic layer, share a common dermal microenvironment, and age through remarkably similar molecular pathways. DNA damage accumulation, telomere shortening, oxidative stress, chronic inflammation, and stem cell exhaustion — all these processes unfold in skin and hair follicles in parallel, forming what the authors of a new review published in Experimental Gerontology in 2026 call the "co-aging axis." Understanding these shared mechanisms opens a fundamentally new logic: targeting both organs simultaneously through common molecular intervention points. Full breakdown and practical takeaways — in our editorial note.

Biotin is marketed as a beauty vitamin and sold over the counter — often at doses far exceeding the daily requirement. Yet few people know that excess biotin can disrupt immune function and produce false results in allergy diagnostics, including specific IgE testing. A review published in Nutrients in 2025 systematizes evidence on biotin's role as a hypersensitivity factor and a source of interference in immunochemical test systems. Full breakdown — in our editorial note.

We know that UV radiation damages DNA in skin cells, triggers oxidative stress, and breaks down the extracellular matrix. But sunlight has another, far less-studied target — the trillions of bacteria living on our skin’s surface. A new study has shown that UV irradiation significantly alters the metabolome of skin commensals, particularly the spectrum of tryptophan derivatives. This, in turn, shifts the signaling between microorganisms and skin cells — specifically, the activity of the aryl hydrocarbon receptor (AhR) and epidermal barrier function. This opens an entirely new perspective on why photoprotection matters: sunscreens protect not only skin cells, but also the microbial communities that live on them. Full breakdown of the study and practical takeaways — in our editorial note.

Rosacea is a chronic skin condition that is notoriously difficult to control: conventional treatments frequently cause irritation, laser-based therapies are costly, and impaired barrier function limits the choice of topical agents. The challenge is particularly acute in the papulopustular subtype, characterized by persistent erythema, papules, and pustules. A potential solution is supramolecular salicylic acid (SSA) — an innovative formulation in which the active molecule is bound to poloxamer 407, enabling sustained release and markedly reducing irritation potential. Chinese researchers conducted a randomized controlled trial of 30% SSA in patients with papulopustular rosacea — the response rate in the treatment group reached 68.75% versus 0% in the placebo group. Full breakdown of the study and practical takeaways — in our editorial article.

Glycerol — a familiar ingredient in topical skincare — is increasingly finding its way into injectable hyaluronic acid (HA) formulations. Why add it alongside HA, which already binds water so effectively on its own? It turns out these two substances operate at different levels: HA retains moisture in the extracellular matrix, while glycerol maintains water balance directly inside cells. This division of roles opens up meaningful clinical possibilities — smoother tissue distribution, reduced risk of edema, and additional support for cellular metabolism. How does it actually work, and at what concentrations? See details in our editorial note.

Hyaluronic acid is increasingly used not only in skin care products but also in hair care products. Its presence in the market is expanding; however, its effectiveness in hair care formulations is determined not simply by its inclusion in the formula, but by molecular weight, degree of hydrolysis, combination with other components, and the ability to be retained on the keratin substrate. Low-molecular-weight and hydrolyzed forms, as well as compositions combining fractions of different molecular weights, appear to be the most promising for damaged hair. Of practical interest are both data on increased moisture content and improved mechanical properties of hair and findings indicating reduced frizz and a smoothing effect.

Wound care still requires a compromise: a product should reduce pain, avoid traumatizing damaged tissue during application, remain on the surface, and support tissue repair. A recent study describes a thermosensitive spray-gel with lidocaine and allantoin that is applied as a liquid and rapidly forms a gel at skin temperature. The authors report a suitable viscosity for spraying, rapid gelation, near-complete lidocaine release within 120 minutes, and encouraging in vitro findings in biocompatibility, keratinocyte migration, and TNF-α reduction. However, the data are limited to a laboratory stage. A detailed breakdown and practical takeaways are available in our editorial note.  

Zinc hyaluronate (Zn‑HA) combines the moisturizing properties of hyaluronic acid with the biological activity of zinc, making it of interest not only in cosmetics but also in wound therapy. In a new article, the authors examine how the physicochemical properties of this HA salt change and why this is crucial for gel formulation. Special attention is given to clinical observation: in 23 children with superficial facial burns, the average reepithelialization time was 7.9 days, with no signs of infection and short hospitalization. The discussion compares these results with previously published data on other dressings. Analysis of the study and practical highlights — in our editorial note.

Managing nonsegmental vitiligo remains one of the most challenging tasks in dermatology: even with standard therapy, visible repigmentation is slow to appear, and predicting who will truly respond to treatment is difficult. In a prospective study published in the Journal of Investigative Dermatology (2026), the authors compared early changes in the skin and blood with 6-month outcomes. They demonstrated that a decrease in specific populations of tissue-resident memory T cells, Tr1 cells, and the FABP4 protein could serve as potential markers of response. We explore what the researchers measured, which signals were linked to repigmentation, and how this data can benefit practitioners. Research breakdown and clinical insights are in our editorial note.

Psoriasis is no longer viewed as a purely “skin” condition: systemic inflammation is linked with cardiometabolic risks, while clinical practice still lacks specific markers of disease activity and treatment response. In this context, lipidomics (a branch of metabolomics) has emerged as one of the most promising tools. Modern mass spectrometry techniques make it possible to identify which lipids in psoriatic skin change in class and structure, how the proportions of ceramides, fatty acids, and inflammatory mediators shift, and how these alterations relate to barrier dysfunction and transepidermal water loss. We review which lipid signals are considered candidate biomarkers and how these data may influence diagnosis, monitoring, and therapeutic decision-making. Analysis of the study and practical insights are available in our editorial note.

Tattoo pigment does not remain isolated in the skin. As a foreign material, it can trigger an immune response—most often localized, involving regional lymph nodes, but in some cases extending beyond the skin and becoming systemic, including presentations in sarcoidosis. In a review article (Eur J Microbiol Immunol 2026) that included 33 publications, the authors traced clinical scenarios, diagnostic approaches, histopathologic findings, and outcomes of these conditions. We break down why tattoo pigments can mimic malignancy, what forms of lymphadenopathy are described in the literature, and which questions remain unanswered. Details — in our editorial note.

Up to 60% of variation in visible skin aging traits may be linked to genetics, but actual manifestations are strongly shaped by the exposome: UV radiation, pollution, diet, stress, and lifestyle. A DNA skin profile (SNP-based DNA profiling) helps identify inherent tendencies in advance: susceptibility to dryness and barrier dysfunction, hyperpigmentation, accelerated collagen breakdown, reduced antioxidant defense, and microinflammation. This provides clearer guidance for skincare selection and procedure planning: who should focus first on barrier repair, who needs stronger photoprotection and prevention of post-inflammatory hyperpigmentation, and who may benefit from antioxidants and anti-inflammatory ingredients. Full details are in our editorial review.