MELANOGENESIS STIMULANT COMPOSITIONS DERIVED FROM EXTRACTS OF PLANTS OF THE GENUS NIGELLA

摘要

Disclosed are extracts and compositions containing the extracts useful for stimulating melanogenesis; the extracts are obtained from the plants of the genus Nigella (Ranunculaceae). The extracts and compositions are useful in personal care and pharmaceutical compositions for preventing, improving, or treating hair conditions and/or leukotrichia resulting from a reduction in or failure of melanin production. Such compositions may be applied topically or taken orally. The compositions stimulate melanin production as well as inhibit testosterone 5a-reductase, an indirect method to increase melanin production.