Achieve big, fluffy brows in one effortless swoop with the MAC Eye Brows Big Boost Fibre Gel. This 24-hour fibre gel is designed to create fuller, thicker, and fluffier-looking brows. Its waterproof and sweatproof formula ensures your brows and color stay perfectly in place all day long. Key Features: - Creates fuller, thicker, fluffier brows - 24-hour wear - Waterproof and sweatproof formula MAC Eye Brows Big Boost Fibre Gel is your go-to for achieving impeccably shaped and voluminous brows that last. Keywords: MAC, Eye Brows, Big Boost, Fibre Gel, Eyebrows, Makeup, Fuller Brows, Thicker Brows, Fluffy Brows, Waterproof, Sweatproof.