shampoo for brown or chestnut hair1L Milkshake Cold Brunette shampoo is specially formulated for brunette hair. The special blue pigments in the new Milkshake Cold Brunette range neutralize red orange tones in brunette hair, eliminate unwanted warm undertones, and extend the life of cool hair colors. It is ideal for brunette, light brown, or dark blonde hair, whether natural or color treated. Paraben free.