Why do my fingernails turn a yellowish color after wearing dark red nail polish?

Why do my fingernails turn a yellowish color after wearing dark red nail polish?

1. Introduction Fingernails turn a yellowish color after wearing dark red nail polish because the highly porous keratin structure of the nail plate readily absorbs the intense iron oxide pigments and reactive synthetic dyes present in darker formulations. When these deeply colored pigments remain in prolonged contact with the nail surface, they penetrate the microscopic … Read more