Beauty & Personal Care

Beauty discounts are driven by retailer events more than by brands: Ulta's 21 Days of Beauty and holiday sales, Sephora's seasonal savings events for members, and drugstore promotions at CVS and Walgreens where buy-one-get-one and store-reward offers are constant. Brand stores such as Paula's Choice, The Ordinary and Kiehl's run their own sales and first-order codes, and Amazon's clip-on coupons are common on skincare.

Two cautions. Prices on the same product differ by size and pack, so compare per millilitre or per unit. And skincare on marketplaces can be counterfeit or expired when sold by unknown third parties; buy from the retailer, the brand or an authorised seller, especially for retinol, vitamin C and sunscreen.