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This study found that some white or grey human hairs can naturally regain pigmentation, suggesting a potential temporary reversibility of hair greying associated with stress and molecular changes.

This study found that patients with premature greying of hair had significant abnormalities in cardiovascular risk markers, including elevated IL-6 levels, compared to healthy controls.

This article highlights the prevalence of iron deficiency, with or without anemia, as a significant factor in diffuse nonscarring hair loss in women, particularly affecting certain groups such as menstruating women and vegetarians.

This article discusses the challenges in understanding and treating premature graying of hair and calls for more extensive research, reporting no new findings.

This article reviews the impact of H2O2-redox homeostasis on hair follicle pigmentation via tyrosinase and associated mechanisms, discussing primarily findings from murine models without providing new clinical results for humans.

The document concludes that early recognition and appropriate treatment of red scalp, red ear, and red scrotum syndromes can lead to remission.

This study observed that darker hair is typical in wetter regions for the Indriidae family, while within Propithecus, dark black hair is common in colder forests, suggesting evolutionary adaptations to environmental pressures.

This article discusses observations about the relationship between baldness and gray hair in middle-aged men, noting that baldness often precedes grayness, and suggests a possible connection to premature aging, but reports no new data.

Red dots on the upper chest may be an early sign of certain types of hair loss.

In this case study, a patient experienced darkening of hair color after taking acitretin, an oral retinoid known for potentially causing alopecia, marking a rare and undocumented phenomenon.

This study reported that Rapp-Hodgkin syndrome, AEC syndrome, and EEC syndrome are likely part of a single genetic disorder spectrum linked to mutations in the TP63 gene.

This study observed that tooth loss in mice led to premature graying of hair in the interbrow region, which was possibly due to reduced stimulation of the trigeminal nerve, suggesting that decreased mastication could cause this type of hair graying.

This study found that hair coloring, waving, and ironing were associated with increased hair abnormalities compared to untreated hair in Iranian women.

This paper highlights the need for a comprehensive red ginseng monograph to provide standardized information on its components, certified functionality, efficacy, action mechanisms, and safety, especially given its widespread use as a health functional food in South Korea and interest in its benefits worldwide.

This observational study reports a striking correlation between the use of henna hair dye and a specific pattern of hair loss, termed "hennapecia," but calls for experimental research to determine causality.

Hair graying may help prevent cancer by protecting stem cells.

In this report, a 77-year-old woman treated for essential thrombocytosis with low-dose hydroxyurea experienced an unexpected change in hair color from gray to dark brown after 20 weeks, highlighting a potential aesthetic side effect of the drug, in addition to therapeutic effects.

In this study, red ginseng extract and its ginsenosides enhanced human hair follicle cell proliferation and countered dihydrotestosterone-induced suppression, suggesting potential to promote hair growth.

This study identified a mutation in the keratin 71 gene that causes curly hair in certain rats, advancing our understanding of hair formation.

This case report describes a 3-year-old girl with short hair since birth, showing normal hair density with many vellus and intermediate hairs, and no hair shaft abnormalities.

This study demonstrated that using chelants like N , N ′ ‐ethylenediamine disuccinic acid in hair coloring products can significantly reduce keratin fiber damage by preventing the formation of metal-induced free radicals.

Among participants in a 26-week trial, this study by REVIAN Inc. reported that their REVIAN RED dual wavelength LED light treatment for androgenetic alopecia was both safe and effective at the 16-week mark.

This study explores the complex and not yet fully understood causes of premature hair greying, noting genetic factors such as Pax3 and MITE genes, potential defects in melanin transfer, and associations with certain syndromes, while stating that effective treatments are currently lacking.

In this study, rapamycin was found to increase hair follicle pigmentation and prolong anagen duration in cultured human scalp hair follicles, suggesting it could be explored as an anti-greying agent.

In this review, researchers outline the characteristics of scalp rosacea, an underrecognized inflammatory dermatosis, describing its multifactorial pathogenesis, diagnostic features, and management strategies, noting its clinical similarities with facial rosacea and the absence of standardized diagnostic criteria or therapeutic guidelines.

In this in vitro study, red ginseng extract and its main ginsenoside, G-Rb1, were found to protect human hair follicular keratinocytes from oxidative damage, preventing apoptosis, promoting hair growth, and modulating hair cycle transitions by influencing specific cellular signaling pathways.