Reviews For Dr. Dennis Gross Skincare C + Collagen Brighten & Firm Vitamin C Serum

Smells awful (as with most C serums) but terrible under makeup.

I have been using for about a month. I see no difference. The smell is awful as with many C serums. I could get past that if it didn't pill terribly under make up. I've used many Vitamin C serums over the years and there are definitely better ones on the market.