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This study found that puerarin, derived from Pueraria thunbergiana, may stimulate melanogenesis and prevent follicular depigmentation in a hair graying mouse model.

This study highlights multiple factors contributing to hair graying, such as oxidative damage, melanocyte changes, and genetic influences, and suggests that repigmentation may be temporarily reversible, offering potential targets for future treatments while urging caution when applying mouse model findings to humans.

In this case report, a 25-year-old woman with alopecia areata experienced hair regrowth after treatment with baricitinib, despite not responding to conventional treatments, with the new hair initially appearing dark brown.

Papular mucinosis can cause eyebrow hair loss, but treatment can lead to regrowth.

This study observed that processing techniques such as degreasing, bating, and tanning influence mink skin by altering the distribution of fat glands and collagen fibers, potentially impacting hair follicle structure and mink product quality.

This study found that bimatoprost was significantly more effective than sweet almond oil in increasing eyebrow hair density and length in young women over a 5-week period.

This review examines current understanding of hair graying and suggests it may be caused by depletion of melanocyte stem cells due to genotoxic stress or dysfunctional melanocytes from oxidative stress.

This study highlights that chemicals used in brow lamination, like ammonium thioglycolate and thioglycolic acid, may cause skin irritation and other systemic issues, suggesting a need for further investigation and regulatory measures.

This study found that Sox2 and BMP signaling may be key regulators of pigmentation and melanocyte migration, as suggested by experiments in mice, human biopsies, and cell co-cultures.

This study found that compromised antioxidant activity in gray hair follicles affects both mature melanocytes and their immature precursors, linked to down-regulation of melanogenesis-related genes.

This review examines the pathogenesis of premature hair graying and potential treatment avenues, but reports no new experimental outcomes, highlighting ongoing research challenges and hopes for drug development.

This case report describes a patient with glaucoma who developed reversible hyperpigmentation and hypertrichosis after using bimatoprost eye drops, aiming to explore prostaglandin analogues' potential roles in hair and depigmentation therapies.

In this study, daily application of bimatoprost 0.03% ophthalmic solution for 9 months significantly improved eyebrow appearance in individuals with mild to moderate eyebrow hypotrichosis, without observed side effects.

This study suggests that increased Wnt signaling may cause melanocyte stem cell exhaustion, leading to hair graying in aged mice by promoting excessive differentiation of melanocytes.

This study suggests that the susceptibility of hair follicle melanocytes to oxidative stress as they age may be key in the graying of hair due to reduced catalase expression and activity.

This study found that ponytails with small fractions of gray hair have significantly lower swing height and higher damping, affecting the dynamic movement and appearance compared to those with fewer gray hairs.

This research investigates apoptosis and bcl 2 expression in hair follicles cultured with and without biotin, but it reports no new results.

This article discusses the complexities of brow hair restoration and reports no new clinical results, emphasizing the meticulous and technically demanding nature of this procedure.

This study found that the dark pigmentation pattern in Dun Mongolian horses' "Bider marking" is closely associated with higher protein levels and specific localization of MITF and WNT3A, suggesting these are key factors in its formation.

This study reports that aging in mice leads to curved hair follicles and an increase in white hairs, potentially due to changes in keratinocyte and melanocyte stem cells.

This article discusses advancements in managing the aging brow and forehead, reporting on a tailored problem-specific approach using both innovative technologies and traditional surgeries, but provides no new clinical results.

This letter reports repigmentation of hair in patients receiving latanoprost therapy.

This study found that UVB exposure led to visible tanning and distinct DNA methylation changes in pigmentation genes in tan-capable skin but not in non-tan skin, highlighting GNAS as a potentially UVB-responsive gene.

In this study, silencing BMAL1 and PER1 genes increased melanogenic activity in follicular and epidermal melanocytes, suggesting that peripheral circadian clocks may regulate melanin pigmentation.

This study suggests that different melanocyte subpopulations in hair follicles have varying patterns of apoptosis and survival during the catagen phase, which may inform models for modulating melanocyte behavior in vivo.

This article reviews the pathogenesis and treatment approaches for premature graying of hair, noting the unsatisfactory options currently available, and reports no new clinical findings.

This study found that rice bran ash extract and orthosilicic acid both increased melanin synthesis and related protein expression in melanocytes, suggesting potential therapeutic use for melanin deficiency.

In this study, researchers observed that in mice, as they age beyond 200 days, unusual curved hair follicles and increased white hairs emerge, indicating stem cell-related changes in keratinocyte and melanocyte characteristics, providing insights into hair aging processes.