To reap the full benefits of your sunscreen, you should be using one teaspoon to cover your face. If you are only using a thin layer, an SPF 50 isn’t really a 50. The greater the SPF, the more likely a sunscreen will be heavy, greasy and whitening on the skin, making compliance a problem. We recommend using a cosmetically elegant SPF 15 or SPF 30 every day and reapplying it every few hours. Remember, when sunscreen is applied correctly:
SPF 15 blocks 93% of UVB rays
SPF 30 blocks 97% of UVB rays
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