My husband suffers from psoriasis and as a Chemist, I decided to carry out some research and try to find a cure. I found that the worst and main irritant which increases the flare ups is the chlorine which is added to tap water. Plus, there are about 700 other chemicals found in tap water today, which can also irritate sensitive skins. The level of chlorine varies on the season and temperature.Most people are simply unaware to the dangerous side effects of chlorine. Of course, chlorine is necessary to kill bacteria in our water. Nobody wants a typhoid epidemic. It makes sense to remove the harmful chemicals at the point of use.There is a logical, simple method to control psoriasis , eczema and dermatitis.Use clean water first - inside and out, then use whatever has been prescribed for you. This system is very effective in keeping psoriasis under control. The cosmetic and medical industry thrives on the damage done to ALL skins created by washing hair and body in chlorinated tap water. We now have installed a quality reverse osmosis water filter and the best shower and bath filter. Problem solved. These two items are so necessary for sensitive skins. There is not much point using creams and lotions on skin that is irritated and damaged by chlorinated tap water. I haven't found the cure, but I have completely removed the irritants which make psoriasis 'angry'.