logo

5. The false security of SPF

High SPF numbers can give a false sense of security. SPF, or Sun Protection Factor, measures how well a sunscreen will protect skin from UVB rays. However, no sunscreen can block 100% of UV rays, and higher SPFs don't offer significantly greater protection than SPFs of 30, which block about 97% of UVB rays. What's more, high-SPF products may tempt you to stay in the sun longer, increasing exposure to UVA rays, which aren't included in SPF.

Orange tube of sunscreen on sandy beach top view

Advertisement
Advertisement
Advertisement

Popular Now on Facty Health


Disclaimer

This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.