Relative Bioavailability, Transdermally Administered EE and GSD, 3 Applications Sites

Inclusion Criteria: * Healthy female subjects * Age 18-45 years * Body mass index (BMI) 18-30kg/m² * At least 3 months since delivery, abortion, or lactation before the first screening examination * Ability to understand and follow study-related instructions * Willingness to accept the synchronizing cycle and to use non-hormonal methods of contraception after starting the synchronizing cycle and during the treatment periods Exclusion Criteria: * Contra-indications for use of combined (estrogen/progestin) contraceptives (e.g. history of venous/arterial disease, liver disorders, migraine) * Skin diseases with suspected alteration of dermal resorption and /or increased risk for dermal intolerance * Regular use of medicines other than contraceptives * Smokers (at the age of 31 to 45 years) * Clinically relevant findings (e.g. blood pressure, physical and gynecological examination, laboratory examination)