Bioderma Nodé K Shampooing is indicated for the treatment of scalp psoriasis. This shampoo has a descaling effect that helps to remove psoriatic plaques, while is also has a soothing and anti-irritation effect in order to reduce itching. This product can also be used on the body, in order to reduce the plaques on other sites besides the scalp. The salicylic acid and Cade hydrolat have a keratolytic action and zanthalene and forskolin help to soften the itchiness and irritations.