There’s no heiress hauteur to Prisca Courtin-Clarins, 27. Born into a beauty empire—her grandfather Jacques founded Clarins—the front-row fixture wasn’t afraid to prove her business chops on her own. So in Paris, where DIY manis are the norm, she started the now wildly popular Nail Factory chain of salons. “It was important to get legitimacy and respect,” she explains of her motivation. Now, as the family business turns 60, she’s joining the fold as strategic projects director of spa activities, bringing a focus on inside-out wellness. She already walks the talk: while her skin-care routine is speedy (you need “only 30 seconds” to apply her favourites, Clarins Double Serum and Multi-Active Cream), she devotes serious time to fitness—horseback riding, Pilates, yoga and bouts with a trainer. “When I’m tired, he says, ‘Think about your bathing suit!’” After all, no matter what assets we inherit, few of us achieve success without breaking a sweat.