Toppik Hair Building Fibers in Dark Brown is a revolutionary hair thickening solution that instantly creates the appearance of fuller, thicker hair. Made with natural keratin protein fibers, it seamlessly blends with existing hair to provide natural-looking coverage for thinning areas. Key features: • Made with natural keratin protein fibers • Instantly creates fuller, thicker-looking hair • Stays securely in place until next shampoo • Weather and wind resistant • Easy to apply and remove • Seamlessly blends with natural hair The dark brown fibers work by using static electricity to bond securely to existing hair strands, creating natural-looking density and volume. The product is safe for daily use and washes out easily with regular shampoo. It provides an effective temporary solution for both men and women looking to conceal thinning hair or add overall volume. The fibers resist wind, rain and perspiration throughout the day.