Alphosyl 2 In 1 Shampoo is a medicated scalp cleanser Herbal Fragrance Shampoo that is used for the treatment of psoriasis, an itchy scalp, dandruff and seborrhoeic dermatitis. Alphosyl 2 In 1 Shampoo What is Alphosyl 2 In 1 Shampoo?Alphosyl 2 In 1 Shampoo is a medicated scalp cleansing shampoo which helps to treat itchy skin conditions affecting the scalp. What do you use Alphosyl 2 In 1 Shampoo for?You can use Alphosyl to care for and treat: Psoriasis Eczema Seborrhoeic Dermatitis Dandruff. These conditions can often leave you feeling agitated which is why Alphosyl have come up with this effective solution to tackle these problems. How does Alphosyl work? it contains coal tar extract which has mild antiseptic and anti-inflammatory effects which work to relieve itching to leave your scalp feeling cool, calm and refreshed.