Toppik Hair Building Fibers offer an instant solution for thinning hair, providing a natural, fuller look. Made with keratin protein fibers that blend seamlessly with your existing hair, these fibers are designed to resist wind, rain, and sweat, ensuring long-lasting coverage. Perfect for all hair types, the Dark Brown shade complements medium to dark brown hair tones, giving you a confident and polished appearance. Easy to apply and remove, Toppik Hair Building Fibers are your go-to choice for achieving voluminous hair instantly.