- Female patients of child-bearing potential with a negative urine pregnancy test who agree to use effective methods of birth control or remain abstinent during treatment. Participants must use birth control for the entire study and for at least 1 week after the last application of the study formulation. Acceptable methods of birth control include ongoing hormonal contraception methods, (such as birth control pills, patches, injections, vaginal ring, or implants), barrier methods (such as a condom or diaphragm used with a spermicide), intrauterine devices, tubal ligation, or abstinence