Toppik Hair Building Fibers in Dark Brown is a 27.5g instant hair thickening solution that creates the appearance of fuller, thicker hair. Made with natural keratin protein fibers, it seamlessly blends with existing hair to conceal thinning areas and add volume instantly. Key features: • Made with natural keratin protein fibers • Instantly creates fuller, thicker-looking hair • Stays secure until next shampoo • Weather and wind resistant • Easy to apply and remove • Specifically color-matched for dark brown hair • 27.5g/0.97oz container size The product works through statically charged fibers that bond securely to existing hair strands, creating natural-looking density and coverage. The dark brown shade is precisely color-matched to blend seamlessly with natural dark brown hair tones. The fibers resist wind, rain, and perspiration but wash out easily with regular shampoo. Suitable for both men and women looking to enhance their hair's appearance and cover thinning areas.