Last Modified: August 13, 2012
A sun block with SPF of 30 will protect me from the sun for 30 minutes: Fact or Myth?
Rachel Woods, RN, Nurse for the Surgical Dermatology Program at Penn Medicine responds:
SPF increases the time you have in the sun before your skin begins to turn red...about 20 minutes for a fair skin individual. So SPF 30 for that fair skin individual would increase that time by 30. You still need to reapply every 2 hours or sooner.
This question and answer was part of the OncoLink Brown Bag Chat Series. View the entire Sun Safety Webchat transcript.
Feb 28, 2015 - Mobile phone text messages may be used to help people remember to apply sunscreen, and to narrow the gap between patients' understanding of the importance of using sunscreen and actual daily practice, according to a study in the November issue of the Archives of Dermatology.
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