Sevich Hair Building Fibers is a revolutionary hair thickening solution that provides instant coverage for thinning hair and bald spots. This 25g bottle contains black-colored keratin fibers that blend naturally with existing hair to create fuller, thicker-looking hair in just 5 seconds. Key features: • Instant coverage in 5 seconds • Natural-looking results • 25g/0.88 oz quantity • Black color for seamless blending • Made with keratin fibers • Covers thinning areas and bald spots • Easy to apply and remove The product works by using statically charged keratin fibers that bond to existing hair strands, creating the appearance of thicker, fuller hair. The black fibers are specifically designed to match natural black hair colors for undetectable results. The formula is suitable for both men and women and can be used daily. The fibers stay in place until washed out with shampoo and are resistant to wind and light rain. For best results, use on clean, dry hair and consider using a fiber hold spray to maximize longevity.