Which of these treatments have you used for psoriasis ?

[Caroline]

Effectiveness: Coal tar can be very effective. Some people see complete clearing with coal tar and long remissions (time without psoriasis).

Many patients who have difficult-to-treat psoriasis on their palms and soles (palmoplantar psoriasis) see clearing when they use coal tar along with a corticosteroid that they apply to their psoriasis.

Dermatologists also include coal tar in a treatment plan for patients who have scalp psoriasis. Coal tar can clear scalp psoriasis and increase remissions on the scalp.

How well coal-tar products work varies. You cannot always tell which product will work best by looking at how much coal tar the product contains. In one study, patients using a lotion containing 1% coal tar had better results than the patients using a product that contained 5% coal tar extract. Other studies have found similar results. For this reason, it’s best to ask your dermatologist for a product recommendation.

Dave.... “What is the working ingredient in coal tar?” Or differently said: “Why does it work?”

And additional: “Who found out that it works?”