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This study visualized mitochondrial metabolism in cultured bovine hair follicles and plucked human hairs, finding that ROS and mitochondrial polarization correlate in specific hair follicle regions, particularly near keratin deposition sites.

This abstract highlights that while hair serves a protective role against environmental factors, its main function is aesthetic, contributing to an individual's flawless appearance when healthy and well-cared for.

This study suggests that Foxn1 expression in keratinocytes influences pigmentation in mice, highlighting differences in the molecular mechanisms between mouse and human pigmentation processes.

This study proposes a model describing the transformation process from living to dead cells during early hair formation, highlighting the stepwise degradation of cellular functions.

This study observed that hairless mice of different strains initially grow hair but soon develop alopecia and other skin and pigmentation changes with age.

This study examined skin biopsies from a woman with Addison disease and found melanocytic hyperpigmentation in the epidermis, with a notable melanocyte/keratinocyte ratio indicating increased melanocyte presence in the arm compared to the thigh.

In this mouse study, UVA and UVB exposure led to hair follicle miniaturization, graying, and prolonged hair cycle duration, associated with changes in stem cells and increased Wnt signaling activity.

This case report describes a rare instance of reversible melasma-like hyperpigmentation linked to vitamin B12 deficiency due to pernicious anemia, and explores possible mechanisms for this association.

Premature graying of hair is mainly caused by genetics, stress, and environment, with potential treatments being explored.

This review highlights the significance and future potential of forensic DNA phenotyping for predicting human phenotypes from crime scene DNA but reports no new results.

In this study, researchers observed that individuals with premature graying of hair had significantly higher LC3 gene expression compared to controls, suggesting a potential link between autophagy and the development of this condition, with LC3 gene expression as a possible independent predictor.

This study suggests that 3,4,5-tri-O-caffeoylquinic acid activates β-catenin to enhance pigmentation in mouse hair follicles, human melanocytes, and melanoma cells during the hair cycle's growth phase.

In this study, researchers found that the FOS gene may play a significant role in promoting hair follicle development in Tan sheep between birth and the Er-mao period.

As skin ages, it gets thinner, paler, and more wrinkled, and protection and care like sunblock and moisturizers are important.

This article reviews the need for multicenter clinical trials to establish reference data for ultrasound screening protocols for Down syndrome and reports no new findings.

In this study, silver foxes given a yeast "filtrate factor" supplement retained their fur and normal pelts, while those without it experienced fur loss and thymus abnormalities.

This source reports that bimatoprost, a medication approved for eyelash growth, has shown efficacy in treating eyebrow hypotrichosis, suggesting it as a noninvasive, effective, and well-tolerated option for enhancing eyebrow hair.

This study found that reducing BMP signaling in mouse nipple epithelia, achieved through Noggin overexpression, can convert them into hairy skin with pilosebaceous units.

This study found that the FOS gene may play a significant role in promoting hair follicle development in Tan sheep, with elevated expression during the Er-mao period.

This study found that rice bran ash extract enhanced melanin biosynthesis-related protein expression in a 3D hair follicle-like tissue model and hair follicle organ culture, suggesting potential for future research in melanogenesis.

This review examined the psychological effects, mechanisms, health associations, and treatments related to premature hair graying, highlighting factors like genetics, oxidative stress, smoking, and diet, with the aim of enhancing understanding and addressing its broader implications.

This case study highlights that vitamin B12 deficiency can cause reversible hyperpigmentation, illustrated by a vegetarian female patient whose skin lesions improved after treatment.

This article reviews treatments focused on stimulating collagen synthesis and improving skin appearance through methods like mechanical dermabrasion and laser surgery, but it reports no new clinical results.

This study found that theabrownin-selenium nanoparticles (TB-Se NPs) effectively target Malassezia-induced dermatitis through a dual antifungal and immunomodulatory mechanism, suppressing fungal overgrowth, reducing inflammation, and enhancing immune memory to prevent recurrence in a dermatitis model.

This article discusses recent findings on hair graying involving melanocyte stem cell maintenance and key regulatory molecules, and reports no new experimental results.

This review discusses the role of intrinsic skin signals, rather than serum signals, in regulating melanin synthesis and hair pigmentation, but reports no new experimental data.

This article reviews follicular melanogenesis, detailing how melanin synthesis and its regulation in hair follicles depend on a complex interplay of cellular and molecular mechanisms, but reports no new clinical findings.

This study demonstrates that Bazi Bushen capsules may have therapeutic potential against skin photoaging in mice by enhancing NRF2 expression and targeting the KEAP1-NRF2 pathway.