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This study found that scalp micropigmentation significantly improved psychological well-being among adults by enhancing appearance satisfaction and perceived physical attractiveness, but not through a direct relationship with psychological well-being itself.

In this study, researchers identified exosomal miR-199a-3p as a key factor in the regulation of melanogenesis by dermal papilla cells, finding that it enhances melanocyte proliferation and melanin production, suggesting potential therapeutic targets for pigmentation disorders.

This clinical study in healthy Indian adults found that a four-month application of an Ayurvedic leave-on treatment significantly increased natural black hair density, reduced grey hair count, and was well-tolerated without adverse effects, suggesting its efficacy and safety for treating premature hair greying.

Nilotinib may cause gray hair to return to its original color.

This study found that injecting various hormones or hormone-cholesterol mixtures into Willow Ptarmigan and White-tailed Ptarmigan led to the growth of pigmented feathers instead of the usual white winter feathers, suggesting hormonal influence on plumage color changes.

VIP reduces hair pigmentation by decreasing melanin production.

Topical sulforaphane reduces pigmentation and wrinkles from sun damage.

This article reviews the role of melanins in determining human hair color and discusses the specialized regulation of hair melanocytes during growth, with no new findings reported.

This article explains the role of melanins in hair color, focusing on their production by melanocytes, but presents no new research findings.

This study found that BMP signaling influences hair pigmentation in mice by affecting the Agouti protein and interacts with MC-1R pathways to modulate melanin production.

This article discusses the role of neurohormones and neuropeptides in hair follicle pigmentation and outlines promising neuroendocrinological strategies to address greying and damage, but reports no new clinical results.

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 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.

This review explores the shared pathogenesis of alopecia areata and vitiligo and compares treatment responses, noting that hair regrowth in alopecia areata occurs more rapidly than skin re-pigmentation in vitiligo, possibly due to differences in stem cell biology and treatment effects on melanocytes.

This study concluded that hair pigmentation, as measured by eumelanin-to-pheomelanin ratio, is not a risk factor for developing alopecia areata when compared to androgenetic alopecia patients.

This literature review reports that mutations in the SASH1 gene are linked to different pigmentation disorders, including dyschromatosis universalis hereditaria and lentiginosis. It further suggests SASH1's significant role in melanocyte processes and its potential as a target for developing treatments for these conditions.

This case report describes a 35-year-old woman with diffuse partial woolly hair occurring alongside epidermolysis bullosa with mottled pigmentation.

This review discusses identifying keratosis pilaris, its common mimics, and its associated skin diseases across different skin tones but reports no new results.

This article discusses mouse genetic studies to explore factors influencing melanogenesis, highlighting pH and cysteine's roles, and proposes a hypothesis for human hair color diversity; it reports no new results.

This study found that individual differences between pigmented and unpigmented hair fibers in Old Order Mennonites suggest grey hair may be perceived as drier and less manageable due to small mechanical and moisture changes.

This article discusses the roles of different proteins in melanogenesis and proposes a hypothesis to explain the diversity of human hair pigmentation, but it reports no new experimental results.

This study found that inhibiting mTORC1 activity with rapamycin increased both hair growth and pigmentation in human scalp hair follicles, suggesting a potential strategy for treating greying and hair loss.

This study found that human dWAT regulates hair growth and pigmentation through HGF secretion, highlighting potential novel targets for treating hair growth and pigmentation disorders.

In this study, researchers found that in adult mice, new hair follicles with pigmentation can regenerate from the epidermis after skin wounding, aided by melanocyte stem cells moving from nearby existing hair follicles.

This study revealed that different coat patterns in cats and cheetahs are related to variations in the aminopeptidase Q gene and endothelin-3 expression, which affects pigment production.

This review discusses the use of follicular unit extraction and scalp micropigmentation in treating male pattern baldness, noting that scalp micropigmentation provides a non-surgical option to emulate natural hair appearance without downtime.

This article reviews Cronkhite-Canada syndrome as a distinct condition from Peutz-Jeghers syndrome and familial polyposis, with cases showing gastrointestinal polyposis, skin, hair, nail abnormalities, and hypoproteinemia.

This study demonstrated that the biomimetic peptide PTP20 may help preserve hair pigmentation and reduce greying by enhancing melanocyte function and increasing melanin production in human hair follicles.

In this study, saponins from Korean red ginseng were found to protect against the harmful effects of airborne particulate matter on human skin cells by reducing oxidative stress, inflammation, leptin expression, and melanin production.

Hair dye can cause serious scalp issues, including skull erosion.