Face Serums

Oil Serum, 1 fl oz, $29, by S.W. Basics, available in January 2015 at SWBasicsofBK.com

Think of face serums as a concentrated nutrient boost for your skin: They may cost more than your usual skincare product and look smaller, but you only need a few drops of these elixirs every day to keep your face moisturized. Brooklyn-based S.W. Basics takes a less-is-more approach to the matter, with a serum made of only four organic ingredients: Avocado oil (rich in minerals and vitamins), geranium oil (antibacterial and skin-tightening), turmeric (soothing), and coffee oil (nourishing and moisturizing).