It's O.K., but....... [SEP] I've had psoriasis for about 30 years.  I used the Ionil -T products for years at the suggestion of my dermatologist, and they worked well.  I went to this plain shampoo (no conditioner) as the price started going up, and used it for a long time.  Then, when the price on this stuff doubled in 12 months, I started looking around, and found this deal on Amazon for two 16-oz. bottles of the Beta-Tar gel shampoo [[ASIN:B001ET7798 Betatar Gel Shampoo, Dandruff Shampoo, 16 Ounce Bottle (Pack of 2)]] for less money than one bottle of the Ionil-T.  It's twice the strength (2% coal tar) and lathers a WHOLE lot better than the Ionil-T ever did.  I've been using the Beta-Tar product for about a year now, and I am very pleased with the results for my scalp psoriasis.  Check out my review at the product site.