"I've been using it for about 10 days and the results are already noticeable, and not just me, several people have told me that my skin looks much more luminous , that what I'm doing is very noticeable." This very laudatory comment is expressed by a user on Amazon. It refers to an anti-aging, anti-acne serum that also has the ability to reduce hyperpigmentation and blemishes on the skin: the niacinamide serum from the Éclat Skincare brand.