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This study analyzed gray hair, revealing that it differs from pigmented hair in follicular activity, oxidative balance, and structure, impacting coloring processes and necessitating adapted techniques to maintain hair quality.

This study discovered that the circadian clock influences hair follicle regeneration, making hair grow faster in the morning and causing more radiation-induced hair loss in the morning compared to the evening.

This article proposes criteria to differentiate between medicalization and over-medicalization, examining the consequences and ethical considerations of misidentifying medical issues, and suggests guideline questions to help draw clearer boundaries in medicine.

In this review, researchers explore the roles of lactoferrin in skin and hair health, highlighting its potential anti-inflammatory and regenerative benefits despite the lack of well-controlled clinical trials for hair-specific outcomes.

This study reviews melatonin's diverse roles in dermatology, highlighting its potential to protect skin from UV damage and oxidative stress, enhance DNA repair, and influence hair follicle cycling, suggesting therapeutic applications in skin care and hair renewal.

This study found that adults with alopecia go through stages of embarrassment, seeking solutions, and acceptance, influenced by stress, lifestyle, and social factors, resulting in a withdrawn life due to negative body image.

This study found that in mice, chronic stress elevates corticosterone levels, which suppresses hair growth by keeping hair follicles in a prolonged resting phase.

This study found that age-related fluctuations in hormones and endocannabinoids in male C57BL/6 mice showed specific patterns, with peak values observed around 2.7 to 3.4 months, with these patterns seen in both plasma and hair but with different magnitudes.

This study identified non-structural proteins in preschool children's scalp hair that suggest potential biomarkers for brain development, immune function, and stress response with heritability and age-related differences.

This review discusses the potential use of cultured primary fetal cells from a single organ donation to produce therapeutic products, emphasizing the need for process consistency and safety verification, but reports no clinical results.

This review discusses age-related changes in scalp skin and their potential effects on hair follicle aging, but reports no new clinical results, calling for further investigation.

This review suggests that the mTOR signaling pathway may play a significant role in hair follicle health by influencing the effects of Vitamin D receptor deficiency, potentially contributing to hair follicle damage and related hair loss conditions.

This review discusses how the brain can influence skin biology, suggesting a link between psychological factors and skin health, but it reports no new scientific findings.

In this study, researchers found that substance P triggered premature catagen development and immune changes in human scalp hair follicles, providing a possible biological link between stress and hair loss conditions like telogen effluvium and alopecia areata.

This review discusses the interplay between hormonal and immune systems in hair follicles and reports no new results, highlighting the need for further research on their role in skin biology and alopecia areata.

This review examines platelet-rich plasma for tissue repair and regeneration, reporting promising but inconclusive efficacy across applications; the authors stress the need for rigorous clinical trials.

This study found that TAp63 and ΔNp63 isoforms in the p63 family interact with different transcription factors to regulate distinct transcriptional programs, affecting various biological functions like metabolic pathways, oxidative stress response, and epithelial morphogenesis in mouse epidermal cells.

In this study, researchers measured long-term cortisol levels in horse hair to assess stress under different management conditions, finding the highest levels in police horses and much lower levels in sport and leisure horses, suggesting management methods may influence stress loads.

This article suggests that cultural and environmental influences, such as exposure to sexualized content, stress, poor sleep, and unhealthy diets, may accelerate androgenetic alopecia onset by affecting hormonal systems, gene expression, and hair follicle health, despite its genetic basis.

This study found that alcohol dependence is associated with altered HPA axis functioning, with AD patients showing higher hair cortisol concentrations and reduced ACTH and cortisol levels, irrespective of childhood maltreatment history.

In this study, researchers observed that chronic stress affected wild-derived house mice differently by sex, with females showing less weight gain and distinct behavioral changes, while males exhibited higher hair corticosterone levels, suggesting divergent coping strategies and implications for sex-specific stress assessment protocols.

This review discusses the shared biological mechanisms between allergy and autoimmunity, emphasizing pruritus as a central symptom in psychophysiological dermatoses, and reports no new clinical results.

This study highlights recent biological and technological strategies in anti-aging research aimed at delaying aging and related diseases, improving skin healing, and potentially restoring hair growth.

This review explores the complex biological process of hair graying, highlighting oxidative stress, genetic factors, and interventions like antioxidants and genetic therapy as key aspects affecting the preservation of hair pigmentation.

This review explores the biological applications and pharmacokinetics of decursin, a compound isolated from Angelica gigas, highlighting its potential neuroprotective, anti-inflammatory, and anticancer properties based on in vitro and in vivo studies.

This review summarizes biological links between aging and androgenetic alopecia, particularly focusing on cellular senescence, and discusses potential therapeutic strategies, but reports no new clinical results.

This review discusses the synthesis and biological activities of jasmonates, highlighting their potential as drugs and prodrugs, but reports no new clinical results; further research and trials are anticipated.

This review discusses androgenetic alopecia and alopecia areata through a systems biology lens, emphasizing the role of multi-omics data integration to explore molecular mechanisms and potential therapeutic strategies, but offers no new clinical results.

This research review highlights how hair cortisol concentration can reflect the activation of the stress-response system in farm, domestic, and wild animals, noting it correlates with factors like species, sex, age, and environmental conditions, which may influence stress and adaptation.

This review discusses various factors influencing alopecia areata and explores newer therapeutic options like biologics and regenerative techniques, but it reports no new clinical trial results.