63 citations,
February 2017 in “ACS biomaterials science & engineering” Polydopamine is a safe, effective, and permanent hair dye that turns gray hair black in one hour.
161 citations,
June 1994 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair stops producing melanin as it transitions from the growth phase to the resting phase.
62 citations,
October 2013 in “Journal of Human Evolution/Journal of human evolution” Forensic DNA Phenotyping can help predict physical traits from crime scene DNA to identify suspects.
53 citations,
November 1997 in “Journal of Forensic Sciences” Darker hair in guinea pigs holds more codeine than lighter hair.
30 citations,
June 2006 in “British journal of dermatology/British journal of dermatology, Supplement” Oral zinc sulphate reduces dark hair color in mice.
22 citations,
January 1985 in “Journal of Human Evolution/Journal of human evolution” Human skin and hair color variation is mainly due to melanin produced by a few genes, with melanin protecting against sun damage.
15 citations,
June 2019 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” Chemical and physical treatments like bleaching, dyeing, and UV radiation damage both Caucasian and Afro-ethnic hair.
14 citations,
September 2017 in “General and comparative endocrinology” Barn owls with smaller black spots have higher testosterone levels, which might be due to genetic effects on hormone regulation rather than hormone effects on coloration.
14 citations,
November 2013 in “PloS one” HGF/SF increases skin melanocytes but doesn't change melanin type or amount.
10 citations,
November 2009 in “Pigment cell & melanoma research” The document concludes that MGRN1 affects mouse fur color by interfering with a receptor's signaling, but its full role in the body is still unknown.
9 citations,
July 2022 in “Cell reports” Sox2 controls hair color by affecting pigment production in hair follicles.
8 citations,
November 2022 in “International Journal of Cosmetic Science” Human hair varies widely and should be classified by curl type rather than race.
8 citations,
January 2018 in “European journal of dermatology/EJD. European journal of dermatology” The girl's regrown brown hair had less of certain pigments than her original black hair.
7 citations,
February 2019 in “International Journal of Dermatology” Gray hair is caused by reduced melanin production or transfer issues, linked to aging and possibly health conditions, with treatments focusing on color camouflage.
4 citations,
October 2021 in “International Journal of Cosmetic Science” Cirsium japonicum flower extract increases melanin production and could help treat depigmentation conditions.
3 citations,
January 2021 in “Skin appendage disorders” Hair color is not a risk factor for developing alopecia areata.
research Hair
1 citations,
April 2023 in “Elsevier eBooks” Hair analysis can detect drug use but is costly and interpretation is complex.
1 citations,
November 2022 in “Animals” The research found specific genes and pathways that control fur development and color in young American minks.
1 citations,
January 2009 in “Elsevier eBooks” Lasers can reduce hair growth but may also damage skin.
April 2023 in “Journal of Investigative Dermatology” Blocking casein kinase 1 in skin cells can help melanocyte precursors move better, potentially helping with conditions like vitiligo or gray hair.
March 2021 in “CRC Press eBooks” Physical exams are important in hair loss diagnosis, considering cosmetic history, systemic diseases, and classifying alopecia types.
The gene Endothelin 3 makes mice's fur darker by increasing pigment cells and pigment levels.
January 2000 in “Optics Letters” Laser treatment can inhibit hair growth and different hair colors reach different temperatures when lasered.
3 citations,
November 2022 in “Frontiers in Oncology” Melanin may help melanoma cells grow by aiding their metabolism.
November 2023 in “Journal of the American Academy of Dermatology” Skin of color can spontaneously repigment after a phenol-croton oil chemical peel.
2 citations,
September 2020 in “International journal of radiology & radiation therapy” Radiotherapy can cause rare changes in hair color, which should be discussed with patients.
9 citations,
January 2019 in “Postepy Dermatologii I Alergologii” The skin acts like an endocrine organ, making hormones that affect skin diseases and respond to stress.
231 citations,
July 2008 in “Nutrition reviews” Diet changes can protect against harmful environmental effects on fetal development.
210 citations,
July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair color production in mice is closely linked to the hair growth phase and may also influence hair growth itself.
112 citations,
July 1998 in “Journal of Investigative Dermatology” Ruby laser pulses best destroy hair follicles during the growth phase and effectiveness varies with laser intensity; melanin is key for targeting, and timing treatments can improve results.