How much sunscreen must be applied to get the protection advertised?
Much more than you think! At a recent conference of dermatologists, we learned that if you imagine your cupped hand mounded with shaving cream, that’s the amount you must apply to achieve the SPF rating that the product claims. The FDA suggests: to get the maximum protection from your sunscreen, apply at least one large handful about 30 minutes before you go outside, and reapply after swimming, toweling dry, or participating in any vigorous activity that causes heavy perspiration.
