Schwarzkopf Colour Specialist Permanent Hair Colour 4.13 Dark Cool Brown Permanent hair colour for perfect grey coverage with anti-breakage technology OmegaPlex + Hyaluronic Acid Colour Specialist gives you a rich colour, long-lasting colour with perfect grey coverage while caring for and moisturising hair thanks to anti-breakage technology OmegaPlex combined to Hyaluronic Acid. The new Colour Care System helps the pigments penetrate deep into the hair locking in the colour. Anti-breakage technology OmegaPlex combined to hydrating Hyaluronic Acid cares for and protects the hair against breakage, both during and after colouring. - with omegaplex + hyaluronic acid - anti-breakage technology The colour Care System helps the pigments penetrate deep into the hair locking in the colour protects the hair against breakage, both during and after colouring.