"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." For as long as I can remember, I’ve wished for thicker, fuller hair. I’d stare in envy as my peers weaved ...

If you have flat, thin, or ultra-fine hair, you already know the struggle: everything looks great when it’s wet… and then by the time it dries? Flat. Limp. Deflated. The frustrating truth—according to ...