The human scalp has different types of pigment cells in hair follicles with varying abilities to produce pigment.
May 2023 in “Elsevier eBooks” Scalp micropigmentation is a safe way to hide hair loss and scalp scars by tattooing tiny dots that look like hair follicles.
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.
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December 2015 in “Nature Genetics” Mutations in TBX3 cause horses to have more even hair color instead of Dun camouflage.
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October 1985 in “Genetics Research” Beige and leaden pigment genes act within melanocytes, affecting pigment patterns.