"You won't regret it," Barbara Corcoran told the Mastronado brothers when they selected her to finance their Shark Tank pitch, Nardo Naturals. And they certainly haven't—since whipping up their first moisturizer in their kitchen in 2009, the passionate brothers have developed a complete line of organic skincare products that's now available across the country. Rooted in whole ingredients such as coconut oil, acai berry, and bentonite clay, the collection has achieved USDA-certified organic status. Products range from anti-aging solutions—including the Fourever Youth Serum with age-spot-abolishing Retinol GS50—to a mentholated Muscle Rub backed by Cy Young Award–winner David Price.