Inclusion Criteria:  - Patients with recurrent pityriasis versicolor (active now) and not taking treatment for it. Patients of both genders. Age ≥18 years old.  Exclusion Criteria:  - Patients with other cutaneous diseases. Patient's having dandruff (scaly scalp) even if not symptomatizing. Pregnant and lactating females, children, prisoners, cognitively impaired or mentally disabled subjects. Patients with autoimmune diseases. Patients with immunodeficiency diseases. Immunosuppressed patients e.g. HIV, diabetics, organ transplant, malignancy, patients taking immunosuppressive drugs e.g. chemotherapy, cortisone.