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Brandon Litzner MD's blog

What's the difference between physical and chemical sunscreen?

Physical vs. chemical sunscreen

The strength of sunscreen is measured by Sun Protection Factor (SPF). SPF measures the protection from UVB rays that cause sunburns.

There are two different types of sunscreen — physical and chemical. Physical and chemical sunscreens both protect the skin from the sun’s harmful UV rays by preventing the them from contacting the skin. Many modern sunscreens work by using a combination of physical and chemical blockers to provide UV protection.

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