Abstract: It is an object of the Invention furnish a method for treatment of psoriasis at the human body for the purpose of healing this disease by way of bacteriophages. The treatment of the psoriasis patient is performed with a whole bath. The bath liquid comprises 95 percent water and 5 percent fresh milk or 100 percent fresh milk. The treatment temperature amounts to about 99 degrees Fahrenheit over the complete treatment time of 30 minutes. A glycerol ointments to be applied to the patient at the erythematous positions after termination of the bath. The treatment period is daily over 14 days.