MAC Cosmetics big boost fib rule

Elevate your brow game. Give your eyebrows incredible volume with this 24-hour fiber gel for perfectly polished and professionally untamed looks. This tinted formula effortlessly creates fuller, thicker, fluffier brows. The small synthetic microfibers define and shape the brow hairs. Additionally, a water- and sweat-resistant formula ensures that color and volume last all day and night.