SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/uv-index-three

At what UV Index should you start protecting your skin?

3 or higher.

  1. 3 or higher ✔
  2. Only at 8+
  3. Only in summer

Why: UV rays can damage skin even on cool or cloudy days.

Huh, didn't know that: Snow and water can reflect UV rays.

The dad joke
What does the sun eat for breakfast? Light toast.
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Sources

  1. CDC Sun Safety Facts https://www.cdc.gov/skin-cancer/sun-safety/index.html
Health BasicsDoes SPF 30 mean you can stay in the sun 30 times longer?Health BasicsIs any sunscreen really waterproof?Health BasicsHow much toothpaste should you use?

That's stuff everyone should know.