Not only great for holiday gifting, skin care sets are incredibly helpful when building a routine that caters to your specific skin needs. Testing out bite-sized versions of retinol-infused serums and BHA-formulated products makes it easier to decipher which items deserve a permanent place in your beauty lineup. Plus, the best skin-care gift sets almost always cost half as much as the regular-sized product, so you’re getting an entire routine without having to break the bank.