
The lower one is particularly susceptible to sun damage, says NYC dermatologist Paul M. Friedman, MD. Use balms or gloss with SPF 15, at least, and reapply often. The shine in a gloss without built-in protection can actually act like a magnifying glass, attracting rays and intensifying their burning power, says Adrienne Denese, an NYC MD and founder of Dr. Denese skincare products.