The 10 Commandments of Long-Lasting Makeup

Thou shalt conceal—sparingly.

After foundation, apply a densely pigmented (not runny) concealer (like Kevyn Aucoin The Sensual Skin Enhancer, $45; Barneys.com), targeting any remaining dark spots or blemishes. Goodwin applies concealer so sparingly that she uses a pointed eyeliner brush to make sure she's not covering any unnecessary areas.