"And there was always kind of this sense in the back of my head of like, 'OK, well, someday I'm going to start my own business.'" So a few years ago, he left to launch his own skin-care business ...

including what certain ingredients do for the skin. Fadul advises keeping business startup costs to a minimum by starting with a basic line (cleanser, toner and moisturizer), and expanding from there.

Konstantin Kakanias All of the experts we consulted agreed on one thing: Sunscreen is, hands down, the most crucial and preventative skin-care product. Experts recommend using a daily moisturizer ...