Toppik Hair Building Fibers in Dark Brown is a 27.5g instant hair thickening solution that creates the appearance of fuller, thicker hair. Using statically charged keratin protein fibers, it seamlessly blends with existing hair to conceal thinning areas and add natural-looking volume. Key features: • Made with natural keratin protein fibers • Instantly creates fuller, thicker-looking hair • Weather and wind resistant formula • Stays in place until next shampoo • Easy to apply and remove • Perfect for all hair types • Large 27.5g/0.97oz size The dark brown shade is specifically formulated to match natural dark brown hair colors. The fibers work by using static electricity to bond securely to existing hair strands, creating natural-looking density and coverage. The product is safe for daily use and washes out easily with regular shampoo. Suitable for both men and women looking to enhance their hair's appearance or cover thinning areas.