A menstrual cup is a hygienic, reusable product, but when used during a yeast infection, it can harbor the fungus causing the irritation. The yeast, known as Candida albicans, can cling to the cup’s silicone or TPE material, risking reinfection during your next cycle if not properly sanitized. Standard rinsing and washing are insufficient to eliminate these fungal pathogens, requiring a thorough sanitation process to ensure the cup is safe for reuse.
Why Standard Washing Is Insufficient
Routine cleaning involves rinsing the cup with water and perhaps a mild, unscented soap, which only removes menstrual fluid and surface debris. This cleaning action is fundamentally different from sanitation, which is the process required to kill microorganisms like fungi and bacteria. The cell structure of Candida allows it to survive simple exposure to cold water and gentle soaps, meaning the spores can remain viable on the cup’s surface.
Yeast thrives in warm, moist environments, and the microscopic crevices or suction holes of a menstrual cup can provide shelter. Since silicone and TPE are non-porous, the yeast adheres to the surface rather than penetrating the cup itself. Without high-temperature or chemical treatment, fungal spores may persist, making the cup a vehicle for recurring infection.
Complete Sanitation Methods for Yeast Elimination
The most reliable method for eliminating yeast is exposing the cup to high heat, which denatures the fungal cells. Boiling your menstrual cup is an effective way to achieve disinfection. After washing the cup with unscented soap and warm water, submerge it completely in actively boiling water for 5 to 7 minutes. To prevent damage, avoid letting the cup touch the bottom or sides of the pot, as direct heat can scorch the material. Using a metal whisk to suspend the cup is a common technique.
For cups that cannot be boiled, or for additional sanitation, a chemical soaking alternative is recommended. A diluted hydrogen peroxide solution is effective, as its oxidizing properties break down fungal cells. Create a solution using a 1:1 ratio of 3% hydrogen peroxide and water, and soak the cup for 30 minutes. Alternatively, mix one part white vinegar with two parts water, and allow the cup to soak for up to 30 minutes.
After any chemical soak, thoroughly rinse the cup under running water to remove all traces of the solution. Lingering residue from hydrogen peroxide or vinegar could cause irritation to the sensitive vaginal environment upon reinsertion. Once rinsed, the cup should be air-dried before inspection and storage.
Post-Sanitation Inspection and Storage
Once deep sanitation is complete, carefully inspect the menstrual cup. Run your fingers over the entire surface, checking for changes in material integrity, such as a sticky or tacky texture, excessive cloudiness, or small cracks. High heat or chemical soaks can cause subtle degradation over time, and any sign of material breakdown warrants discarding the cup. Also check for a persistent, foul odor, which may indicate that microbial residue remains.
The cup must be completely dry before storage, as residual moisture encourages future microbial growth, including yeast. Store the clean, dry cup in a breathable container, such as the cotton pouch provided by the manufacturer. Avoid airtight plastic bags or containers, which trap moisture and create an ideal environment for fungi and bacteria. If you experience repeated yeast infections, even after thorough sanitation, consider replacing the cup entirely.