Welloxon Perfect Creme Developer - 6% 20vol - 500ml. The ideal developer for new Wella Koleston Perfect ME+ permanent colours. Specifically reformulated to achieve the most accurate colour and consistency, as well as easier mixing and application, Welloxon Perfect developers are available in multiple volumes - 1.9%, 4%, 6%, 9% and 12%. 6% 20vol also available in 1000ml.










