Cerynë has been diligently researched and formulated with very precisely balanced, ultra pure ingredients to mimic the natural biology of the vagina. The delicate vaginal mucous membranes require a very specific environment to maintain their health and condition. Cerynë contains lactic acid and glycogen to support the natural microbiome found in the vagina. This helps maintain a heathy pH of 3.8, while at the same time keeping the correct osmolality of the environment, to give your body a chance to restore its own natural microenvironment.