For the one in five people currently experiencing dandruff and the 50% of the population who eventually will, Kerastase's new regimen care is a solution that effectively treats the root causes of dandruff while also delivering salon-quality results, according to the brand.    With a complex of salicylic acid, pyrithione zinc, bifidus prebiotic and squalane, the new formulation is designed to dissolve dead skin cells, slow down cell renewal, soothe inflammation and reduce bacteria pr...