What skin care products should I keep in the fridge? That’s the question beauty obsessives are asking themselves after spotting mini cosmetic refrigerators on counters and tabletops while scrolling the world of beauty Instagram. Most of us have found ourselves at one time or another skimming the fridge for some late night snacking — what about some late night masking? Makeup fridges are apparently the coolest and most extra trend chilling the skin care community. Even search interest in makeup and beauty fridges has steadily grown over the past 12 months, proving it’s the buzzworthy appliance we all supposedly need on our vanity table. But is there any science behind why you would store some beauty products in a fridge? The answer is complicated, according to Joshua Ross, celebrity aesthetician and founder of SkinLab. Basically, anything with antioxidants — i.e., your fancy vitamin C serum — could be extremely unstable when exposed to heat and light, so they might last longer when refrigerated. Some of the more popular antioxidants in skin care products are ingredients like vitamin C, retinols and vitamin A, vitamin E and niacinamide, and they work to prevent the oxidation of sk...