PH-10 is an aqueous hydrogel formulation of rose bengal disodium (RB) for topical
administration to the skin, and is being studied for the treatment of cutaneous skin
disorders, specifically psoriasis and atopic dermatitis. This multicenter phase 2 study of
subjects randomized sequentially by center to one of four treatment cohorts will assess
efficacy and safety of topical PH-10 applied once daily to areas of mild to moderate plaque
psoriasis.