To be used with natural latex rubber or silicone diaphragms or cervical caps. Also compatible with natural latex rubber or polyurethane condoms. Water soluble, limpid. Contragel Green has no known side effect on the pH value of vaginal flora. It can be used as often and as long as required. In case of the occurence of any problem by using Contragel Green, please stop using it and ask your pharmacist, health adviser, or family planning clinic.