Milkshake SOS Rootsmilk_shake sos roots is an instant hair touch up spray for roots with a natural looking effect without staining or leaving residue. The range of 6 shades adapt to any hair color and are efficient on all hair types: dark brown brown light blond blond mahogany black. milk_shake sos roots gives instant and total coverage to greys. Use the special applicator for an instant result without staining.