November 2022 in “The journal of investigative dermatology/Journal of investigative dermatology” The study found markers indicating that cells responsible for hair color are differentiating in specific areas of the hair follicle.
The human scalp has different types of pigment cells in hair follicles with varying abilities to produce pigment.
41 citations
,
April 2019 in “PLOS genetics” CD34+ and CD34- melanocyte stem cells have different regenerative abilities.
November 2025 in “Journal of Investigative Dermatology” Tanning ability is linked to specific DNA changes in skin genes.
14 citations
,
April 2005 in “Experimental Dermatology” Stressed fibroblasts greatly increase melanin production in hair, skin, and eye cells, mainly due to a growth factor called bFGF.