Unsure what to gift someone who loves beauty? We don't blame you. There are so many brands and products to choose from. Enter beauty advent calendars, which allow the giftee to try loads of products throughout the entire month of December. You can opt to go all in on a single brand (like Charlotte Tilbury or La Mer) or try a mix of bestselling skincare, makeup and hair picks from a retailer (like Net-a-Porter and Saks Fifth Avenue). From the makeup beginner to the full-blown skincare connoisseur, we've rounded up 20 of the best beauty advent calendars for everyone on your list.