MAC Eye Brows Big Boost Fibre Gel STRUT – Reddish Brown | 24-Hour Waterproof Brow Gel

Meet MAC Eye Brows Big Boost Fibre Gel STRUT in Reddish Brown—a tinted gel that adds fullness in a single swoop. By blending a lightweight gel with tiny synthetic microfibres, it shapes, defines, and builds brow hairs for a polished or boldly untamed finish. The STRUT shade, a reddish brown, complements a wide range of hair colors and skin tones, making it a versatile option for daily use or special occasions.

This formula is designed for enduring color. The waterproof, sweatproof construction helps keep both pigment and volume in place from morning through night, so you can go about your day with confidence. The gel’s texture glides on smoothly, then dries to a comfortable hold that never feels stiff or heavy.

Buildable, natural-looking volume

• Microfibres attach to brow hairs, creating the illusion of fuller, denser brows
• One-swoop application can deliver immediate definition with subtle lift
• Tinted pigment layers without clumping, allowing for adjustable intensity

All-day hold for any routine

• 24-hour wear and reliable waterproof performance
• Stays put through humidity, heat, and daily activities
• Shade STRUT blends with many hair colors for a natural result

Whether you’re aiming for a tidy, polished brow or a more textured, fluffy look, this gel works as a quick upgrade or a finishing touch to your existing brow routine. Its single-step format is designed for busy mornings, while its long-lasting performance makes it suitable for evenings and events where you want your brows to hold their shape and color without fuss.