I purchased to use as a primer under my foundation and have only used twice so to early to know how it works as a treatment.My skin looks so good and feels so soft I do not need to use foundation! It said in the description that it has optical diffusers so was worried I would look like I had sparkles on my face and that is not the case. My skin looks matte and better then bare while looking bare if that makes sense? The serum is thick but spreads easy and absorbs quickly. Men can also use as there is no color to it!