The SureThik High-Performance Hair Thickening Fibers are lightweight natural keratin fibers with a static charge to keep them locked in place. Wind, rain, or sweat are no problem for SureThik. Whether you’re a man with thinning hair or a female that would like to touch up a few weak spots, SureThik Hair Fibers are a premium hair loss alternative to traditional hair fiber brands that use a much coarser fiber that contains artificial or unnatural looking materials such as rayon, bulky wool, cotton or a synthetics. With hairspray, these first-generation hair fibers looked adequate from a distance, but there were limitations. The goal of SureThik was to create a voluminous look that is guaranteed to stay in place and look natural, with normal daily wear, especially with wind, sweat, and rain. With the 8 hair colour shade options, you are guaranteed to get the perfect match to blend with your existing hair. SureThik is guaranteed to give you thicker-looking hair in 10 seconds! The fibers are simple to apply, non-itchy, and hypo-allergenic. They remain in the hair and scalp until washed out. They are wind, rain, and perspiration proof! SureThik is used by celebrities, recommended by hairstylists and hair loss clinics to create a fuller-looking head of hair.