Because you exfoliate less in the summer, it's essential that your cleanser is highly effective. "Ideally, wash twice," advises Annet King, director of training and development for Dermalogica skin care, "first with an oil-based cleanser the most effective way to remove oil then with a gel cleanser. Creamy formulas are too rich for summer." Also advisable: a weekly clay mask to draw out impurities.
MC Recommends: T'Zerah facial soap, Dermalogica PreCleanse
"Lawrence of Arabia knew to dress like the locals," says anthropologist Nina Jablonski, author of Skin: A Natural History. "Loose white robes and flowing head coverings are still unbeatable solar protection." Prefer bikinis? Rely on full-spectrum sunscreens that shield you from both UVB (rays that burn) and UVA (those that speed aging).
MC Recommends: Clarins Sunscreen Spray, Neutrogena Ultra Sheer Sun-block with Helioplex, Dermalogica Super Sensitive Faceblock