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GlossaryPheomelanin

pigment responsible for red and yellow hues in hair

Pheomelanin is a type of melanin pigment found in human hair and skin that gives them a reddish or yellowish hue. It is one of the two main types of melanin, the other being eumelanin, which is darker. Pheomelanin is more prevalent in individuals with lighter skin and hair, and its presence can influence the overall color and tone of these features.

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research Decreased Benzothiazole-Type Pheomelanin in Regrown Brown Hair in Alopecia Areata

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.

research Human Hair Melanins: What We Have Learned and Have Not Learned from Mouse Coat Color Pigmentation

140 citations , August 2010 in “Pigment Cell & Melanoma Research”

We know a lot about mouse hair color, but not much about human hair color differences.

research Influence of Pigmentation on the Codeine Content of Hair Fibers in Guinea Pigs

53 citations , November 1997 in “Journal of Forensic Sciences”

Darker hair in guinea pigs holds more codeine than lighter hair.

research Human Skin Color: Origin, Variation, and Significance

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.

research Circulating Testosterone and Feather-Gene Expression of Receptors and Metabolic Enzymes in Relation to Melanin-Based Coloration in the Barn Owl

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.

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