A. Psoriasis is a medical condition, so I'm sure you're fully aware that there are products that your doctor can recommend. In our beauty department, the range that would be excellent for you is Philip Kingsley.
There's a Flaky Itchy Scalp Duo with shampoo and scalp tonic. The difference with the Philip Kingsley range is that he is a qualified trichologist and has spent years developing his products.
The Scalp Tonic will instantly stop the itch and can be directly applied to dry patches. The Scalp Masque will instantly feel cold on your skin, to help soothe irritating flare-ups. And when you use the Flaky Itchy Shampoo remember to massage it into your scalp so it really gets to work.