Brand: Wella Product Line: Welloxon Perfect Product Type: Size: 33.8 fl oz. , 1 gallon Shade/Color: What is it: Welloxon Developers are the ideal partner for Wella Permanent Colors and Lighteners.Available in different volume for all the services possibilities (1.9%, 4%, 6%, 9% and 12%) Specifically reformulated to achieve the most accurate colour. How it Works: Please follow manufacturer's packaged instructions. Feature and Benefits: Optimal consistency with new Koleston Perfect. Easier and faster mixing. Precise application. Great foil adhesion. Easy rinsing. A comfortable client experience. Ingredients: See product packaging for ingredients.