BioTHIK boosts the appearance of thin hair, making strands look thicker in seconds. This ultimate hair concealer comes in an easily transportable self-applicator. Wind, rain and sweat resistant, BioTHIK is undetectable, durable and compatible with all hair products. The fibres will stay in place until the next wash, where it is easily removed with shampoo. This is the solution for any woman experiencing hair loss, or for those who want thicker, fuller hair.