Can sunscreens legally claim to be waterproof?

The FDA prevents sunscreen companies from labeling products as waterproof, since sunscreens are only water-resistant. Dermatologist Debra Wattenberg, MD, explains this mandate, and how to apply sunscreen properly for the best results.

Top dermatologists share their wisdom on ingredients and SPF levels—plus how much to use, how often to reapply, and more.

How does sunscreen protect your skin? Learn the facts about SPF, UVA, and UVB rays, broad-spectrum sunscreens, and more.

Desmoid tumors are noncancerous and do not metastasize, but they can invade nearby tissues and structures.

These strategies can help you stay comfortable and productive during the work day.

A look at what information to record and some of the key benefits.