49 October Prime Day Deals You Don't Want to Miss

Anastasia Beverly Hills Brow Definer ($18, originally $23)

This brow definer is a bestseller for how perfectly it defines, details, and fills in brows. The distinctive shape of the pencil is intentional; you're meant to leverage its three different-sized edges to optimize your eyebrow routine. Learn more about it via our Anastasia Beverly Hills Brow Definer review.

Editor Quote: "This is the perfect product for someone trying to get a bold brow, but it's definitely not for someone trying to pull off the no-makeup look. My advice is to be gentle when using this pencil — it's creamy and pigmented. So if that's what you're looking for, this pencil is grade A." — Perri Konecky, associate content director