"Why are there different SPF options in sunscreen and how do I know which to use?"
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Sunscreens contain different SPF options to give people the choice of how much coverage they want. Remember, SPF is only a measure of protection against UVB rays, not UVA. This is why it’s important to look for broad spectrum sunscreens, which will filter both types of rays. There is not a huge difference in the levels of protection with different SPF levels above 15. For example, SPF15 offers 94% protection whereas, SPF30 offers 97%. However, the amount of chemical sunscreen is double in a product with an SPF of 30. So if you or your clients are sensitive to chemical sunscreens you are better off using SPF 15 and reapplying more frequently.

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