8 Must-Know Facts About Using Sunscreen, Straight From A Dermatologist

1. Higher SPF doesn’t mean double protection

THECHANNEL46 SPF 15 blocks 93% of UVB sun rays, SPF 30 blocks 97% UVB rays, SPF 50 block 98%, and SPF 100 blocks 99% UVB rays. So higher sunscreen SPF doesn’t mean doubling the protection.

2. Sunblock and sunscreen are different

THECHANNEL46 A sunblock reflects the sun rays from the skin – so basically, it is a physical sunscreen. Sunscreen on the other hand filter outs the UV rays of the skin. So, in general, sunscreen is a chemical sunscreen.

3. Chemical-based and mineral-based sunscreen are the two types of sunscreen

THECHANNEL46 A chemical-based sunscreen filters or screens out the UV rays (both A and B depending upon whether it’s narrow-spectrum or broad-spectrum). A mineral-based sunscreen (usually using Zinc Oxide and Titanium Dioxide) is a physical sunscreen that reflects the sun rays away from the skin.

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