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Vitamin D affects skin and hair by influencing cell behavior and melanin production.

This study demonstrates that dermal white adipose tissue regulates human hair growth and pigmentation through hepatocyte growth factor secretion, highlighting potential therapeutic targets for hair-related disorders.

This study provides suggestive evidence that duplications in the MCHR2 gene may be involved in the pathogenesis of alopecia areata.

This study provides evidence that Cyclosporine A inhibits catagen development in human hair follicles, suggesting different underlying mechanisms from those observed in rodent studies.

This case report identifies a new type of hair matrix tumor called "rippled pattern trichomatricoma," distinguished by its unique cell arrangement and differentiation features.

This study observed that black-haired areas in female Saluki puppies developed hypotrichosis, with dilated hair follicles containing melanin clumps, while white-haired areas remained normal.

In this study, the combination of SCF and ET-1 was found to significantly enhance skin pigmentation and melanin content in human skin xenografts on SCID mice compared to either treatment alone.

This study found that higher melanin concentration in black hair offers photoprotection against sunlight-induced protein damage in the cortex, whereas the cuticle experiences similar photodamage regardless of hair pigmentation.

This review discusses various nanotechnology-based strategies for managing melasma and reports no new clinical results, highlighting the potential of innovative drug delivery systems in treating hyperpigmentation.

This study found that melanin granules in black human hair are key dyeing regions for oxidative hair coloring, as confirmed by nanoscale mass spectrometry analysis detecting deuterium ions.

This article discusses how UV radiation affects hair protein and pigment, destructuralizes keratin, and emphasizes the protective role of melanin, but reports no new clinical results.

This study found that extracellular ATP released from UVB-irradiated keratinocytes promotes melanin production through the P2X7 receptor, indicating a role for ATP-P2X7 signaling in UV-induced melanogenesis.

This study found that patients with frontal fibrosing alopecia had lower epidermal melanocyte counts and reduced epidermal thickness compared to lichen planopilaris patients and controls, suggesting a link with hypopigmentation.

This study in mice found that butin, a component of Vernonia anthelmintica, increased melanin production and related proteins while reducing oxidative stress markers in a model of hydroquinone-induced vitiligo, suggesting support for its traditional use against this condition.

This case report describes a 41-year-old woman with segmental vitiligo and lichen sclerosus in the perineal region, where treatment with clobetasol ointment improved repigmentation and resolved many symptoms, although some scaling persisted.

This research found that spontaneous and depilation-induced hair growth result in biologically distinct telogen phases in murine skin, with variations in thickness, pigment content, and hair follicle composition.

This review examines the evolution of human skin pigmentation and its genetic basis, suggesting that variations might be due to a few interacting gene pairs, and reports no new research findings.

This study investigated the use of dissolving microneedle patches to improve the skin-lightening effects of alpha-arbutin and resveratrol, finding that the patches enhanced intradermal delivery and slightly decreased the melanin index without affecting skin hydration or causing irritation over 24 hours.

This review explores how low-energy He-Ne laser therapy may stimulate repigmentation in vitiligo by affecting mitochondrial pathways and melanocyte function, but does not report new clinical results.

This review highlights the possibility of safely altering hair color through innovative cosmetics by targeting key biological processes in hair follicles, using insights from mammalian pigmentation studies and drug-induced hair color changes as potential pathways.

This article reviews drug-induced pigmentation and reports no new clinical findings, highlighting difficulty in confirming drug associations due to factors like delayed onset and polypharmacy.

This paper reviews recent research on hair graying, suggesting that an imbalance in oxidative stress handling may affect melanocyte stem cells and melanin production with age, and calls for exploring strategies to prolong melanin production.

This study found that quercetin increased melanin production in hair follicle tissues from C3H/HeN Jel mice, correlating with higher levels of tyrosinase protein and TRP-2 protein expression.

This study found that both everyday physical and environmental stresses, as well as chemical treatments, contributed to hair damage, with cuticle layers being more noticeably affected.

This study found that using a ruby laser for hair removal resulted in a significant average reduction of 56.4% in hair density among participants dissatisfied with other methods.

This study identified a marked reduction in melanin in the hair of Yorkshire Terriers with Colour Dilution Alopecia and proposed a new pathogenetic mechanism based on these observations.

This study found that dopamine directly induces the catagen phase in human scalp hair follicles in vitro.

This study found that glycine treatment inhibited melanogenesis in B16F0 melanoma cells and reduced melanin content in C57BL/6J mice by down-regulating tyrosinase protein levels.

This review discusses hormone-related hair growth, hirsutism treatment options, and the combination of eflornithine and laser hair removal, reporting no new clinical results.

This study found that PES1CMU-defatted rice bran (DFRB) showed effective skin whitening and anti-aging properties comparable to standard treatments in cell models, suggesting its potential use in dermatocosmetics.