Toppik Hair Building Fibers in Medium Brown is an instant hair thickening solution that 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, thicker-looking hair • Medium brown shade for natural color matching • Stays secure until next shampoo • Weather and wind resistant • Easy to apply and remove The product works through statically charged fibers that bond securely to existing hair strands, providing natural-looking coverage and density. The medium brown shade is specifically formulated to match natural medium brown hair tones. The fibers resist wind, rain and perspiration while washing out easily with regular shampoo. Suitable for both men and women looking to enhance their hair's appearance and cover thinning areas.