Acne is often associated with oily skin, but sometimes dehydration is to blame. When skin is stripped of moisture, it can produce excess sebum or oil to compensate. Garrette is a firm believer, he says, in “layering hydration” after every cleanse. He recommends using a lightweight toner and a more concentrated serum that both feature ingredients such as hyaluronic acid, beta glucan, glycerin, vitamin E and niacinamide that help reinforce the skin’s lipid barrier — its protective outermost layer. Garrette suggests Paula’s Choice Enriched Calming Toner and Jordan Samuel’s Hydrate Facial Serum.