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For older children and adults, I don't recommend using anything higher than SPF 30 (if your skin has not been in the sun much or is fair) and SPF 15 if you have a little tan. Near water and sand, which are both reflective, you may need stronger SPF. Don't be fooled into thinking you won't burn on cloudy days. And re-apply sunscreen after swimming. Sport sunscreens are stickier and last longer but I don't like them as they clog pores. Don't forget to cover lips, ears and scalp or part. Those burn easily. But don't get sunscreen-dependent. For sunburn remedies, read onSunburn Treatment--Pain Relief, Skin Care, Healing Tips