What you didn’t know about sunscreen that you probably should [Video]

DENVER — Dermatologist Dr. Whitney High never goes anywhere without his trusty umbrella to block out the sun, and there’s good reason.

“Cancer that’s caused by the sun is the most common cancer of mankind,” said High, a professor of dermatology and pathology at the University of Colorado who also practices at Denver Health and the UC Health system.

Many people already know a few of the basics of sunscreen use, including using at least one ounce of sunscreen for exposed skin, re-applying at least every two hours and looking for a sunscreen that has UVA and UVB protection.

“UVA is involved in things like photoaging or looking older than you should from sun exposure. UVB is more involved in skin cancer,” said High.

What you didn’t know about sunscreen that you probably should

Which SPF is best?

It’s common for dermatologists to see people not applying enough sunscreen for the SPF to work …