Kiehl’s experts assess your skin health in-store and troubleshoot your main concerns (wrinkles, lack of firmness and more). Then they create your signature formula. Apothecary Preparations, $110, Kiehl’s.
Fill out the online quiz to determine your skin type and you’ll get three custom serums to remedy your skin (treating every concern from extreme dryness to lack of firmness) delivered to your front door. My Daily Dose Custom-Blended Serum Set, $112, Skin Inc.
Even the moisturizer you swear by can sometimes use a little boost. Add in a couple of these drops to amp up hydration, control oily skin or add radiance. Custom Infusion Drops, from $62, Cover FX.