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Open research questions in Skin Protection and Aging

151 unresolved questions extracted from the limitations and future-work sections of 443 Skin Protection and Aging papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • The precise mechanisms underlying the reduced linoleic acid levels in acne pathogenesis remain unclear. The role of linoleic acid-derived oxylipins in the progression or resolution of psoriasis remains to be elucidated. Further research is required to enhance the understanding and utilization of linoleic acid in cosmetics and pharmaceuticals.

    The Role of Linoleic Acid in Skin and Hair Health: A Review · 2024 · DOI

  • understanding the dynamics of redox status in melanoma can reveal novel therapeutic targets, - identifying potential targets for effective melanoma prevention strategies

    Current Insights into the Role of UV Radiation-Induced Oxidative Stress in Melanoma Pathogenesis · 2024 · DOI

  • The exact role of oxidative stress in melanoma initiation and progression remains unclear. The molecular changes and biological consequences of UV radiation-induced oxidative stress in melanoma pathogenesis have not been fully understood.

    Current Insights into the Role of UV Radiation-Induced Oxidative Stress in Melanoma Pathogenesis · 2024 · DOI

  • This comprehensive analysis aims to inspire further investigation into autophagy-based interventions, offering new hope for preserving skin health in the face of environmental stressors.

    Dysregulation of autophagy during photoaging reduce oxidative stress and inflammatory damage caused by UV · 2025 · DOI

  • Aging is accompanied by progressive vascular dysfunction, but its effects on skin aging remain poorly understood.

    Endothelial senescence drives intrinsic skin aging via the neuroimmune CGRP-mast cell axis in mice · 2025 · DOI

  • Although endothelial cell (EC) senescence is implicated in various age-related diseases, its specific role in dermal aging remains unclear.

    Endothelial senescence drives intrinsic skin aging via the neuroimmune CGRP-mast cell axis in mice · 2025 · DOI

  • Furthermore, the effects of prolyl 4-hydroxylase alpha 1 (P4HA1) and P4HA2 on 3-hydroxyproline, 5-hydroxylysine, and O-glycosylation sites of fibrillar collagen chains have not yet been explored.

    Comprehensive analysis of the effects of P4ha1 and P4ha2 deletion on post-translational modifications of fibrillar collagens in mouse skin · 2025 · DOI

  • Nonetheless, it remains uncertain whether they can alleviate skin photoaging caused by UVB.

    Antiphotoaging effects of a group of antioxidant peptides through downregulating matrix metalloproteinases and inflammation factors · 2025 · DOI

  • Whether VISTA activating antibodies can be leveraged to suppress inflammatory responses and tissue injury is not well understood.

    Targeting Immune Checkpoint VISTA reduces early skin interferon (IFN) and late pro-fibrotic responses following skin injury 2791 · 2025 · DOI

  • Further research on the correlation of LA metabolism and skin disorders, a deeper exploration of the mechanisms underlying the function of LA in skin management and more investigations of its clinical application are required to enhance the understanding and utilization of LA in cosmetics and pharmaceuticals.

    The Role of Linoleic Acid in Skin and Hair Health: A Review · 2024 · DOI

  • Nonetheless, the precise mechanisms through which LA confers protection against damage induced by exposure to UVB radiation remain unclear.

    Linoleic Acid Induces Metabolic Reprogramming and Inhibits Oxidative and Inflammatory Effects in Keratinocytes Exposed to UVB Radiation · 2024 · DOI

  • However, the protective effect of α-arbutin against ultraviolet A (UVA)-induced photoaging has not been well investigated.

    α-Arbutin ameliorates UVA-induced photoaging through regulation of the SIRT3/PGC-1α pathway · 2024 · DOI

  • Squid ink melanin nanoparticles (NPs) have recently been demonstrated to have a number of bioactivities; however, their biocompatibility has been poorly investigated.

    Different Biocompatibility and Radioprotective Activity of Squid Melanin Nanoparticles on Human Stromal Cells · 2024 · DOI

  • Skin problems caused by aging have attracted much attention, and marine collagen peptides have been proved to improve these problems, while mammalian collagen peptides are rarely reported.

    Oral Administration of Deer Bone Collagen Peptide Can Enhance the Skin Hydration Ability and Antioxidant Ability of Aging Mice Induced by D-Gal, and Regulate the Synthesis and Degradation of Collagen · 2024 · DOI

  • Further studies are needed to investigate the long-term effects of the mangrove leaf extract cream on skin health and photoaging prevention. The study's findings can inform the development of natural sunscreen formulations capable of preventing skin damage induced by UVB radiation.

    Anti-Aging Efficacy of Mangrove Leaf Extract Cream Assessed by SPF and Collagen Density Enhancement: In Vitro and In Vivo Approaches · 2026 · DOI

  • There is a need for natural anti-aging active ingredients that can provide effective protection against UVB radiation and promote skin health. Prior studies have highlighted the potential of mangrove leaf extract as a photoprotective agent, but its effectiveness in cosmetic applications is not well understood.

    Anti-Aging Efficacy of Mangrove Leaf Extract Cream Assessed by SPF and Collagen Density Enhancement: In Vitro and In Vivo Approaches · 2026 · DOI

  • The current approaches to measuring skin aging are fragmented and do not provide a comprehensive representation. There is a need for a multidimensional representation of skin aging that captures the complex interactions between intrinsic biology and extrinsic exposures.

    Skin DNA Methylation Encodes Multidimensional Facial Aging Phenotypes with Distinct Biological Architectures · 2026 · DOI

  • HAUT scores use an inverse convention for many traits (higher scores = better skin quality = less severe phenotype), requiring careful biological interpretation of effect direction that accounts for this scoring system.

    Skin DNA Methylation Encodes Multidimensional Facial Aging Phenotypes with Distinct Biological Architectures · 2026 · DOI

  • Most reviewed studies on cutaneous aging mechanisms are observational or experimental in animal models, with randomized controlled trials still limited. Clinical translation of findings regarding cGAS-STING pathway activation in photoaging and Langerhans cell dysfunction requires robust human clinical trial data.

    ENVELHECIMENTO CUTÂNEO E INFLAMAÇÃO CRÔNICA DE BAIXO GRAU: O PAPEL DA IMUNOSSENESCÊNCIA NA DERMATOLOGIA CLÍNICA · 2026 · DOI

  • The heterogeneity of the elderly population, with variability in comorbidities, cumulative environmental exposure, genetic factors, and lifestyle, limits generalization of cutaneous immunosenescence findings. Stratified studies accounting for these variables are needed to develop universally applicable therapeutic strategies for geriatric dermatology.

    ENVELHECIMENTO CUTÂNEO E INFLAMAÇÃO CRÔNICA DE BAIXO GRAU: O PAPEL DA IMUNOSSENESCÊNCIA NA DERMATOLOGIA CLÍNICA · 2026 · DOI

  • The lack of understanding of the underlying mechanisms of LCC's protective effects on the epidermal barrier. The need to investigate the role of autophagy in LCC's protective effects. The limited knowledge on the effects of LCC on skin barrier formation and function.

    Lysine Carboxymethyl Cysteinate (LCC) Protects the Epidermis from UVB-Induced Barrier Damage Through the Activation of Autophagy · 2026 · DOI

  • There is a lack of understanding of the biological activity of organic sunscreens as butyrylcholinesterase inhibitors. Prior studies have not investigated the use of novel machine learning models for predicting the pIC50 of selected organic sunscreens.

    Organic Sunscreens—Biological Activity from an Enzymatic Perspective · 2026 · DOI

  • There is a lack of awareness regarding proper sun protection and eyelid cancer risk. The study aims to fill this gap by evaluating patient awareness and associated preventive behaviors.

    Assessing Patient Awareness of Sun Exposure and Eyelid Cancer · 2026 · DOI

  • The development of a standardized UVA metric, - The revision of sunscreen formulations to provide better UVA protection

    Sunscreens: Limitations of Past and Current UVA Protection Metrics in an Era of Rising UVA-Driven Skin Cancers · 2026 · DOI

  • The lack of a standardized UVA metric, - The limitations of current UVA protection metrics

    Sunscreens: Limitations of Past and Current UVA Protection Metrics in an Era of Rising UVA-Driven Skin Cancers · 2026 · DOI

Most-cited papers in Skin Protection and Aging

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151 open questions have been extracted from the limitations and future-work passages of 443 Skin Protection and Aging papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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