Sofie Pavitt is NYC's acne whisperer, and her award-winning mandelic acid serum is a must-try if you're dealing with clogged pores or acne. The Cosmo beauty team is collectively obsessed with how well ...
What do the best serums for mature skin actually do? “Serums are the powerhouses in your skincare routine that deliver lightweight, fast-absorbing, targeted actives directly to the skin ...