Watch: What is SPF and why is it important?
What really is SPF? Male beauty blogger, Lateef, explains that SPF is a theoretical calculation which helps you determine how long you can stay in the sun, without getting burnt.
If you use a factor 20 sunscreen, this enables you to stay out in the sun for 20 times the amount of time it takes for you to get burnt without sunscreen on.
For more fascinating facts like this, keep watching!
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