In fact, you should avoid SPF 15 altogether. Every dermatologist we consulted with agreed on this: Whether it’s winter or one of the other seasons we actually enjoy, your daily moisturizer should be ...
A sunscreen with SPF 15 allows one-fifteenth of the sun's rays to reach your skin, or about 7%. So it filters out about 93% percent of UVB rays while SPF 30 filters about 97%. This means if you ...
In theory, using sun protection factor (SPF) 15 sunscreen should be enough to stop sun damage. But in reality, people need SPF 30 or 50 to be safe, say the study authors, who carried out ...
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