SPF does not mean time in the sun

Patterns Revealed

SPF 30 does not mean 30 minutes.
It measures UVB protection, not a timer ⏱️
UVA ages, UVB burns.
Broad-spectrum sunscreen aims to cover both rays ☀️
Mineral filters sit on top and mostly absorb plus scatter UV.
Chemical filters absorb UV and turn it into heat 🌞
Quick checklist: broad-spectrum, SPF 30+, enough for your body, apply 15 to 30 minutes before, reapply every 2 hours and after swimming or sweating 🔖

How Do Sunscreens Work? The Science

Mineral vs. Chemical Sunscreen: What’s the Difference?

How does sunscreen work? Understanding UV protection

a woman lying on the beach holding a tube of sun cream

Feel the burn? Explaining the science of sunscreen - UChicago Medicine

Feel the burn? Explaining the science of sunscreen

Ask the Expert: Does a High SPF Protect My Skin Better? - The Skin Cancer Foundation

Ask the Expert: Does a High SPF Protect My Skin Better?

What’s the difference between UVA and UVB rays?

Sunscreens and Photoprotection - StatPearls - NCBI Bookshelf

Decoding Sunscreens: What SPF Should I Use? | CeraVe

SPF does not mean time in the sun

Explore related topics