How Do You Know Sunscreen Works?

Headed south for a warm vacation? If you are going to be in the sun for sustained amount of time, please consider bringing an appropriate SPF. 

During the Women's Health Conference Exhibitor Showcase attendees were able  to view their skin with the Durma Scan. The Derma Scan uses ultraviolet (UV) light to show sun damage that is invisible to the naked eye.

How do you know sunscreen works?  Check out the video at 1:41! 

The American Academy of Dermatology recommends that everyone apply a sunscreen with an SPF30 every day, and an SPF50 before participating in outdoor activities.