La roche posay kerium gel shampoo is the perfect treatment for those with moderate dandruff and oily hair.. This caring hair wash is infused with lha lipohydroxy acid, a patented micro exfoliating agent that works to rapidly eliminate dandruff and regular scale cell turnover. Added anti fungal ingredients purify the scalp and stop the production of dandruff at the source, while regulatory zinc reduces sebum levels and restores physiological balance.. This hardworking shampoo is formulated at a physiological ph for optimum comfort, making it suitable for even the most irritated and sensitive scalps. The scent is fresh and clean, and the soft lather leaves the scalp feeling soothed. Hair looks and feels soft and supple, with a healthy shine and no more dandruff.. Apply twice weekly for four weeks for the best result, with anti dandruff efficacy lasting for six weeks after the treatment.