It’s time to eliminate dandruff altogether – by getting to the root of the problem. Purifying Shampoo also calms the scalp and keeps hair strong and resilient. Dandruff. It’s not exactly people’s favorite topic – and it’s not always easy to deal with, either. That’s why we developed our effective Purifying Shampoo, with zinc pyrithione to fight the fungus that causes dandruff. As we tackle those nasty flakes, 1922 by J.M. Keune is also looking after hair’s health. Cannabis sativa (hemp) seed extract feeds hair the nutrients it needs to grow strong and stay silky – and creatine helps hair stay strong by decreasing breakage. So you can casually run your fingers through your healthy head of hair while wearing that stylish black cashmere sweater.