JASON Dandruff Relief Shampoo is a wonderful treatment which helps to treat and control dandruff. This product has been tested and has been proved to be a gentle cleanser which will control scalp dermatitis and mild psoriasis. The unique combination of ingredients (rosemary, olive, jojoba) are useful as they sooth, help and moisturise while they also remove flakes and itchiness.The MSM helps to rebalance and condition the scalp. Using this may aid in controlling the recurrence of flaking, scaling and itching. Contains no: parabens, SLS, petrolatum, artificial colours or phthalates.