KérastaseKérastase is a French luxury hair and scalp care line that distributes products internationally. Kérastase is part of the L'Oréal Professional Products Division.WWW Official SiteHistoryKérastase was founded in 1964 by scientists at L’Oreal Advanced Research.ProductsKérastase sells hair care and styling products at its salons, through its e-commerce site, and at Sephora and Douglas.Ambassadors Emily Ratajkowski Sydney Sweeney Jang Won-young Demi Moore