My face wash goes by many names. About a decade ago, I started using a product under the brand name Cetaphil because, as best as I can remember, a dermatologist recommended it to me.

The PAO was introduced on cosmetics labels in 2005 by the European Commission, which requires all cosmetic products with a shelf life of 30 months or more to feature the symbol.

Dermatologists agree that sunscreen, face wash and moisturizer are the three most useful products most people can buy, and suggest that consumers should be skeptical of products claiming to offer ...