I realise that a lot of people out there are iffy on vitamins and if they can actually aid in hair growth, but in the five months that I've been taking the Olly Women's Multivitamins ($12), I've noticed that my hair has gotten a lot stronger, and has even grown faster than it ever has. They're gummies containing a mix of biotin, folic acid, and a handful of vitamins, and they're so good that it almost doesn't feel like I'm taking a vitamin when I eat them.