Soothe itchiness and irritation with the specifique cure apaisant anti inconforts treatment from krastase an intensive 4 week set of leave in treatments to help ease discomfort caused by dry scalps utilising innovative haircare technology the formula penetrates deep into the fibre to calm and nourish ps21 soothes the scalp and forms a protective barrier whilst rhamanose stimulates reproduction of fibroblasts to restore elasticity and suppleness aox complex combines the powerful ingredie