Skin tone and skin uniformity are directly linked to the melanin synthesis
and its distribution through the epidermis.
Local excess of melanin leads to uneven complexion and dark spots.
both prevents and corrects hyperpigmentation
in skin by:
Inhibiting Reactive Oxygen Species, free radicals and inflammatory mediators 's release which are responsible for melanogenesis stimulation (production of melanin pigments in skin)
Regulating the production of melanin by inhibiting Tyrosinase (the key enzyme in melanogenesis)
Finally, it reduces the diffusion of melanin
thanks to its action on melanosome transfer.
An in vitro study conducted by L’Oréal Research & Innovation on reconstituted skin showed that administered niacinamide reduced the transfer of melanin to keratinocytes by 78%