31 citations
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February 1999 in “Dermatologic surgery” Sun exposure after laser hair removal can cause skin darkening, which is hard to treat and requires avoiding UV light.
9 citations
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November 2015 in “JAMA dermatology” A 91-year-old woman's hair turned black in one spot, with skin changes underneath.
March 2025 in “JDDG Journal der Deutschen Dermatologischen Gesellschaft” Facial hyperpigmentation improved with oral isotretinoin and ivermectin cream after Demodex mites were identified as the cause.
November 2021 in “CRC Press eBooks” Hair color is determined by melanin and can be affected by genetic conditions like albinism.
November 2023 in “Journal of the American Academy of Dermatology” Skin of color can spontaneously repigment after a phenol-croton oil chemical peel.
PmtHEE is a better model for studying pigmented skin because it includes melanocytes and shows improved cell differentiation.
101 citations
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April 2013 in “Science” Feather pigment patterns form through melanocyte arrangement and simple regulatory mechanisms.
9 citations
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June 1959 in “Archives of dermatology” Hair can darken after inflammation and then return to its original color.
7 citations
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March 2003 in “PubMed” The scalp has a natural speckled pattern of increased pigment around hair follicles, possibly linked to local hormone production.
August 2018 in “Pediatric Dermatology” A baby had a unique skin condition with a pale patch and surrounding dark hairs, not linked to other health issues.
January 2023 in “Indian Dermatology Online Journal” Micropigmentation is a cosmetic tattooing technique for hiding skin issues and creating permanent makeup, but it can have side effects.
1 citations
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January 2009 A 25-year-old Malay fireman had skin bumps on his neck that were removed successfully after other treatments failed.
3 citations
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December 1967 in “Australasian Journal of Dermatology” Becker's Melanosis and Hypertrichosis mainly affects young males, causing brown skin patches and extra hair on one side of the upper body.
29 citations
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February 1989 in “Journal of Cutaneous Pathology” A unique hair tumor with a rippled pattern was identified, showing incomplete differentiation and unusual cell arrangements.
7 citations
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January 2008 in “Indian Journal of Dermatology” Pigmentary mosaicism causes skin color changes and can affect multiple body systems, but has no cure.
32 citations
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May 2023 in “Preprints.org” Skin pigmentation varies due to genetics, UV exposure, and medications, with treatments available but requiring medical advice.
July 1996 in “Hair transplant forum international” Using tretinoin and hydroquinone can speed up the fading of skin pigmentation.
July 2025 in “Advanced Science” Collagen VI and Semaphorin 3C are important for hair pigmentation and could help treat pigmentation disorders.
April 2019 in “Journal of Investigative Dermatology” The created skin model with melanoblasts improves the study of skin color and offers an alternative to animal testing.
2 citations
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May 1991 in “PubMed” Nevus comedonicus is a rare skin condition causing dark bumps, treatable with retinoic acid or surgery.
56 citations
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December 1978 in “The Journal of Dermatologic Surgery and Oncology” Transplanting small skin grafts can successfully repigment leukoderma.
March 2026 in “Portuguese Journal of Dermatology and Venereology” Avoid hair dye after microneedling to prevent scalp pigmentation.
450 citations
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January 2005 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair color is determined by melanin produced and transferred in hair follicles.
1 citations
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January 2019 in “Dermatology Online Journal” A rare skin condition appeared on a 19-year-old woman's scalp.
Hair turning darker can be a sign of skin cancer.
5 citations
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March 1981 in “PubMed” A girl grew extra hair in areas where she had insect bites.
38 citations
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June 2005 in “International Journal of Dermatology” A man with nevus comedonicus syndrome had multiple skin issues, including basal cell carcinomas, which improved with treatment.
3 citations
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March 2021 in “Cureus” A rare combination of halo nevi, nonsegmental vitiligo, and early gray hair can occur together.
29 citations
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January 2013 in “The journal of investigative dermatology/Journal of investigative dermatology” P-cadherin is crucial for hair follicle pigmentation but not skin pigmentation.
14 citations
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September 1968 in “Archives of Dermatology” Using hot combs can cause permanent hair loss on the scalp's crown.