Style Factor Edge Booster Biotin Setting Spray Firm Hold.You?re just a spray away from plenty of volume and sensational style. The Biotin Setting Spray is part of our best-selling Edge Booster product line with lasting hold and nourishing botanicals. Our lightweight hair spray is infused with biotin, keratin, and green tea extract for shine and strength from end to end.Simply sculpt your hair into a look you love and spray a light mist from about 10 inches away. This setting spray helps to seal cuticles and tame flyaways in seconds. Now you can style your hair with a healthy body, renewed strength, and a firm, flexible hold.