Shop Home / Accessories / power tools Colour Out System 2 x 116ml CODE: 17050043 power tools Colour Out System 2 x 116ml Product Details: The Colour Out System, is the safest and most effective way to remove undesirable hair colour. (It also smells good) In just 20 mins, COS corrects and removes the colour by shrinking the dye molecules, allowing it to be simply washed out of the hair. You can also recolour on the same day! To see pricing and the ability to order online, please login using your Salon ID.