Alpecin Gray Attack Caffeine shampoo x 200ml, Dr. Kurt Wolff Gray Attack Caffeine & Color Shampoo - The shampoo that fights gray hair through hair repigmentation technology Gray Attack Caffeine & Color Shampoo provides a natural-looking color effect for gray hair With Alpecin Caffeine Complex!• Less gray hair with a natural-looking color effect. • Innovative coloring shampoo: patent-pending formula. • Easy application with only 2 - 5 min. application time. • Ideal from the first gray hairs. • Stronger hair thanks to caffeine. • Suitable for any hair color - best for light brown to black hair. Did you know: 7 out of 10 men in Germany think gray hair makes them look older For all men who want to fight the first gray hairs, Alpecin Gray Attack, the first coloring shampoo with caffeine, offers the best: the power to darken gray hair with every application!. In just two to five minutes – for a particularly natural color effect!Anti-Grey shampoo with repigmentation technology The innovative repigmentation technology is a patent-pending formula: the active ingredient 5,6-DHI accumulates in the hair shaft during shampooing and reacts with oxygen in the air to form the color pigment.