Results last 23 months without maintenance, then gradually fade as your body's natural melanin production returns
Neuropsychobiology, 1983
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[DOI] [PMC free article] [PubMed] [Google Scholar] 141.Gupta E., Olopade O.I., Ratain M.J., Mick R., Baker T.M., Berezin F.K., Benson A.B., Dolan M.E
Furthermore, studies have examined these effects in fibroblast and keratinocyte cultures, endothelial and neuronal systems, and preclinical animal models related to wound repair and tissue response