I have been using this serum day and night religiously since I received it. I have very oily skin. Congested and large pores included. I have seen great improvements to my skin since switching to BR products, and I will say, I have ordered another bottle of this serum already. It is super light, absorbs quickly, and without leaving a residue. I do not believe this serum could be relied upon solely for clear skin, however, a great incorporation into a regimine. I plan on continuing use of this product in hopes to see even better results. Aida Bicaj has been the best site I have ordered from, I just wish you weren't sold out of so many items......then again, I understand why!