available in Lotion Form in Three Different Volumes : developer : 20 Vols. (06.00 % Ww. Hydrogen Peroxide )developer : 30 Vols. (09.00 % Ww. Hydrogen Peroxide )developer : 40 Vols. (12.00 % Ww. Hydrogen Peroxide ) ratio of Developer to Be Used Along with Color: 1:1color Developing Time: 35 Minutes After Application.if Shade Required is Much Lighter Than the Original Hair Color, Then Hair Should First Be Per-lightened (bleached).for More Details Refer Niconi Pre-lightening Cream and Powder.