HOW TO USE IT
— Use enough sunscreen to fill a shot glass, advises the American Academy of Dermatology, though larger people should adjust accordingly. Most people apply a quarter to half of the recommended amount of sunscreen, which lowers the advertised SPF factor.
— Get some vitamin D. The body needs sunlight to make this vital chemical. The National Institutes of Health suggests five to 30 minutes of sun exposure between 10 a.m. and 3 p.m. several times a week on the face, arms, legs and back during the warmer months. After that, seek shade, cover up, wear a hat and sunglasses and use sunscreen. Speaking of covering up, the FDA doesn't regulate clothing that claims to offer UV protection.
Avoid combo products. Insect repellents aren't necessarily safe for frequent application, but sunscreen needs to be reapplied.
— Julie Deardorff
Sunscreen: How to use it
Apply liberally and remember to reapply.
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