Features:  Natural Keratin: The main ingredient of the product is natural keratin, it does not stick to the collar, not clog pores, and has not any odor Large Capacity: The 27.5g hair fiber supply will typically last 6-8 weeks or 55 to 75 applications depending on amount of thinning area.  Electrostatic Adsorption: Through the principle of electrostatic adsorption, the simulated hair fibers are adsorbed on the hair, making each hair look 10 times thicker, so as to achieve a natural and realistic visual thick hair effect. No Embarrassment: After using the setting spray, there will be no embarrassment of leaving black sweat during daily sweating, such as playing, running, and exercising. However, it cannot be used during sauna or swimming. How to Use: Arrange your hair well before using this product, and make sure your hair is dry before use; spray it evenly on sparse areas 7.5-15cm/3-6inch away from your hair; use a styling spray to fix the effect Specifications: Material: Keratin Color: Medium Brown, Dark Brown, Black, Light Brown, Auburn, Medium Blonde, Light Blonde Capacity: 27.5g Package Included: 1 x Hair Fiber Note:  1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.