Milkshake - Direct Colour - Silvermilk_shake Temporary Powder Colour Treatment. A direct cosmetic colour that can be used at home or in the salon to colour, condition and protect the hair. The colour is temporary and has the ability to correct difficult technical hair problems. A direct cosmetic colour that can be used at home or in the salon to colour, condition and protect the hair. The colour is temporary and has the ability to correct difficult technical hair problems. Formulated