CARING COCKTAILS

While acids do the brunt of the work, niacinamide, aka Vitamin B3, does the nurturing. Add it as another skincare step or look to Susanne Kaufmann Enzyme

Peel, $102 (6), which includes it. Likewise Biossance Squalane + Lactic Acid Resurfacing Night Serum, $95 (3), adds the hydrating powers of squalane.