9. Makeup with SPF Doesn’t Cut It
Makeup and daily moisturizers with SPF will protect your skin if you load them on and reapply every 90 minutes, says Darrell S. Rigel, M.D., a clinical professor of dermatology at New York University. And who’s really going to do that? What’s more, according to a recent study from Memorial Sloan-Kettering Cancer Center in New York City, most SPF-spiked beauty products skimp on the all-important UVA-blocking ingredients. Researchers analyzed 29 daily facial creams with an SPF of 15 to 50, and only six of them contained enough UVA-blocking ingredients to provide adequate UVA protection. So think of your moisturizer and makeup as just an extra layer of protection, and always apply a lightweight, broad-spectrum sunscreen such as Clinique’s City Block Sheer Oil-Free Daily Face Protector SPF 25.
10. Soaking Up Vitamin D Is No Excuse for Skipping Block
Vitamin D strengthens your bones and immune system, reduces your risk for breast, colon, kidney, and ovarian cancers, and regulates at least a thousand different genes controlling virtually every tissue in your body. The American Medical Association has recommended 10 minutes of direct sun (sans sunscreen) several times a week to get that dose of D, but the American Academy of Dermatology says no amount of unprotected sun exposure is OK. “Vitamin D is very important, especially for women,” says Friedman.
“But that’s not a reason to get any amount of unprotected exposure to the sun.” Instead, obtain your daily D through your diet (milk, fortified orange juice, and canned salmon are all good sources) or a supplement (under your physician’s supervision). The newest recommendations suggest 1,000 to 2,000 IU a day. Try Nordic Naturals Vitamin D3 ($16, nordic naturals.com).