Are you Brooke Shields, Lily Collins, or Cara Delevingne? No? Then chances are, you’re always experimenting with the best eyebrow growth serums to give your brows a little boost. And I say “always experimenting” because there are so, so many brow products on the market — a Sephora search for “brows” turns up 154 search results, and that’s just one site — and yet, so few of them seem to work as quickly as you’d want.
