When Bethenny Frankel gives her stamp of approval, we can't help but want to learn more. That's why we set our sights on Nutrafol's hair growth supplements. Earlier this spring, she told Shape, "I did Nutrafol for a month, I think it works" - and we've been interested ever since. See it! The celeb-approved supplements are formulated with science-backed vitamins, minerals and natural ingredients. A few that standout are Ashwagandha botanicals, saw palmetto, tocotrienol complex and collagen peptides that balance stress hormones and strengthen strands from the inside out.