How to Properly Clean and Sterilize a Menstrual Cup

A menstrual cup is a reusable product, typically made from medical-grade silicone or TPE, designed to be inserted into the vagina to collect menstrual fluid. Meticulous cleaning prevents the growth of harmful bacteria and preserves the cup material. Proper care ensures the cup remains hygienic for internal use and extends its lifespan. Understanding the distinct processes for daily cleaning versus end-of-cycle sterilization is important for safe and effective use.

Daily Cleaning During Use

The routine cleaning process occurs every time the cup is removed and emptied, which may be up to four times per day depending on the user’s flow. It is beneficial to rinse the cup with cold water immediately after emptying the contents. Rinsing with cold water first helps prevent staining and the setting of blood pigments onto the cup’s surface.

After the initial cold rinse, the cup should be washed thoroughly with warm water and a mild cleansing agent. The soap used must be oil-free, fragrance-free, and ideally dye-free, as harsh chemicals or oils can degrade the silicone or TPE material over time. Residual oil can create a film on the cup, potentially leading to irritation. Pay particular attention to the small suction holes just beneath the rim, ensuring they are clear of any debris to maintain the cup’s seal.

Cleaning the cup while in a public restroom setting requires different techniques, as direct access to a sink may not be available. In these situations, the cup can be emptied and then wiped clean with toilet paper or a specialized, unscented menstrual cup wipe. Alternatively, a personal water bottle can be used to rinse the cup over the toilet before reinsertion. A more thorough wash with soap and running water should be completed at the next convenient opportunity.

Deep Cleaning and Sterilization Between Cycles

Intensive sanitization is required at the end of each menstrual cycle and before the cup’s first-ever use to eliminate pathogens. The most reliable method for achieving this level of cleanliness is boiling the cup in water. Before boiling, the cup should be thoroughly washed to remove any residual soap or debris, paying close attention to the stem and the suction holes.

The cup must be fully submerged in a pot of boiling water for a duration of 3 to 10 minutes, with 5 minutes being a commonly recommended minimum for effective sterilization. To prevent the cup from resting directly on the bottom of the pot, which can cause heat damage or melting, it can be suspended using a whisk or tongs. An alternative to stovetop boiling is using specialized microwave-safe sterilizing cups or steam sterilization devices, which achieve the necessary high temperatures for disinfection.

Other options for deep cleaning include using specialized sterilizing tablets designed for menstrual cups, which are often used in a full pot of cold water. After any sterilization method, the cup must be removed from the heat source and allowed to cool completely. It should be placed on a clean surface or towel to air-dry fully before storage.

Proper Storage and Maintenance

Storing the menstrual cup correctly between periods is necessary for maintaining its hygiene and longevity. After the deep cleaning process, ensure the cup is completely dry before storage. Trapped moisture creates an environment conducive to the proliferation of unwanted organisms, potentially leading to mold or bacterial growth.

The cup should be stored in a container that allows air to circulate freely. The most recommended storage solution is a small, breathable cotton bag, which most manufacturers provide. Storing the cup in an airtight plastic container or sealed bag should be avoided because these materials trap humidity, potentially encouraging mildew. Furthermore, the cup should be kept away from direct sunlight and harsh chemicals like bleach, rubbing alcohol, or strong household cleaners. These substances can compromise the integrity of the medical-grade material.