Toppik Hair Building Fibers in Dark Brown is a premium hair thickening solution that provides instant fullness for thinning hair. This large 55g container features natural keratin protein fibers that bond to existing hair strands to create natural-looking density and coverage. Key features: • Made with natural keratin protein fibers • Instantly creates fuller, thicker-looking hair • Large 55g/1.94oz economy size • Weather and wind resistant formula • Stays secure until next shampoo • Color-matched for dark brown hair The fibers work through an electrostatic charge that allows them to interweave with existing hair strands, creating the appearance of thicker, fuller hair. The dark brown shade is specifically formulated to blend seamlessly with natural dark brown hair colors. The product can be easily removed with regular shampoo and is suitable for daily use by both men and women looking to enhance their hair's appearance.