Toppik Hair Building Fibers in Dark Brown is an innovative hair thickening solution that instantly creates the appearance of fuller, thicker hair. This 12g container features natural keratin protein fibers that seamlessly blend with existing hair to conceal thinning areas. Key features: • Made with natural keratin protein fibers • Instantly creates fuller-looking hair • Color-matched for dark brown hair • Weather and wind resistant • Stays in place until next shampoo • Easy to apply and remove The product works through statically charged fibers that securely bond to existing hair strands, providing natural-looking coverage and density. The dark brown shade is specifically formulated to match natural dark brown hair colors. The fibers are resistant to rain, wind, and perspiration but wash out easily with regular shampoo. Suitable for both men and women looking to enhance their hair's appearance.