Refectocil Oxidant 3% Liquid Hydrogen Peroxide is a stabilized Liquid developer (Hydrogen Peroxide) especially formulated to be used with Refectocil Eyelash & Eyebrow Tints.Recipe for mixing tint is 1/4" tint and 3 - 6 drops of peroxide - MIX to a creamy (Frosting Like) consistency and apply to brows and lashes.Size: 3.38 oz Approximately 300 applications per bottle for $18.00ONCE OPENED USE WITHIN 12 MONTHSWe ONLY guarantee the results of RefectoCil tints with the use of RefectoCil and Combinal Oxidants.