 [ Symptoms ] is it dangerous to color your hair if you have extremely dry scalp from scalp psoriasis [ Disease ] in general there is no contraindication to the use of hair dyes with scalp psoriasis certain hair dyes may further aggravate your scalp psoriasis consider patch testing a small area prior to dying your whole head do not leave the dye in place for extended periods other options include natural herbal dyes such as henna dyes