8 citations
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August 2015 in “Journal of dermatological science” Rhododendrol in skin-whitening products can cause skin depigmentation and immune reactions.
The human scalp has different types of pigment cells in hair follicles with varying abilities to produce pigment.
21 citations
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April 2000 in “Journal of Cutaneous Pathology” The hamartoma is an abnormal hair growth with limited development in the upper hair follicle.
January 2006 in “Chinese Journal of Dermatology” Amelanotic melanocytes from hair follicles are immature and likely don't transfer melanosomes to keratinocytes.
March 2009 in “Chinese Journal of Dermatology” Melanocytes in the outer root sheath are likely stem cells that grow fast but stay immature.