Group 1: placebo (vehicle) cream, twice daily (BID). Group 2: 1.0% WBI-1001 cream, BID. Patients will be randomized to treat all treatable lesion areas except for the face, scalp, groin and genital areas, and will be instructed to apply the cream twice daily for 84 days, at the same time each day, once in the morning and once in the evening.