Niacinamide VS Hyaluronic Acid

"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.