Toppik Hair Building Fibers in Medium Brown is a revolutionary hair thickening solution that provides instant fullness for thinning hair. This 27.5g container features natural keratin protein fibers that seamlessly blend with existing hair to create the appearance of thicker, fuller hair instantly. Key features: • Made with natural keratin protein fibers • Instantly creates fuller-looking hair • Seamlessly blends with existing hair • Medium brown shade for natural color matching • Stays in place until next shampoo • Weather and wind resistant The product works through statically charged fibers that bond securely to existing hair strands, creating natural-looking density and coverage. The medium brown shade is specifically formulated to match natural brown hair tones. The fibers are resistant to wind, rain and perspiration but wash out easily with regular shampoo. Suitable for both men and women looking to enhance the appearance of thinning hair.