We have seen women boil their menstrual cups in a kitchen pot, worry about the cup touching the hot metal base, and wonder if there is a better way. There is. A foldable sterilizer cup is a silicone container specifically designed to hold a menstrual cup during sterilization, whether on a stovetop or in a microwave. This article explains what it is, why it matters, and why it is worth having.
What the Foldable Sterilizer Cup Is
The MomDaughts Collapsible Sterilizer Cup is a collapsible, medical-grade silicone container with a lid, designed specifically to hold a menstrual cup during the end-of-cycle sterilization process. It works on both the stovetop (in boiling water) and in the microwave, and folds flat for storage between cycles.
It is compatible with all MomDaughts menstrual cup variants and with most other silicone menstrual cup brands.
Why Sterilization Matters
A menstrual cup is an internal product that contacts the vaginal mucosa for up to 12 hours at a time over the course of an entire period. During the cycle, rinsing with mild soap and water after each removal is sufficient. But at the end of each cycle, before storing the cup for next month, the cup needs to be sterilized.
Sterilization means killing the bacteria and microorganisms that have accumulated over the course of the period. Rinsing alone does not achieve this. Boiling water at 100°C is the most reliable and accessible sterilization method for silicone menstrual cups.
Without sterilization between cycles, bacteria can survive on the cup surface during storage and be reintroduced to the vaginal environment when the cup is inserted next cycle. For most women this causes no immediate problem, but over time it can contribute to recurring irritation, odour, or disruption of the natural vaginal flora.
Why a Dedicated Sterilizer Is Better Than a Pot
Most women who sterilize their cups on the stovetop do so in a regular kitchen pot. This works, but it has disadvantages.
The cup can touch the hot base. Silicone placed directly on the bottom of a hot metal pot can develop faint marks or discolouration over repeated cycles. The sterilizer cup holds the menstrual cup suspended in boiling water away from the metal surface.
It requires tongs or a whisk. Without a sterilizer, you need a separate implement to keep the cup off the base and to remove it safely from hot water.
It uses more water. A pot requires enough water to submerge the cup with space around it. The sterilizer cup holds just enough water to do the job, using less energy and less water.
Microwave sterilization is not possible without a dedicated vessel. You cannot safely put a kitchen pot in a microwave. The sterilizer cup is microwave-safe, enabling a 2 to 3 minute microwave sterilization that is equally effective and faster than stovetop boiling.
It is more discreet. In shared kitchens or family homes where privacy matters, using a dedicated collapsible sterilizer that goes away flat between cycles is significantly more discreet than boiling a cup in a visible kitchen pot.
How to Use the Sterilizer Cup
Stovetop method:
- Unfold the sterilizer cup and place the clean menstrual cup inside.
- Fill with water until the cup is fully submerged, approximately three-quarters full.
- Place on the stove on medium heat. Bring to a boil.
- Allow to boil gently for 3 to 5 minutes.
- Remove carefully using a cloth or oven mitt. The silicone will be hot.
- Allow to cool completely before handling the cup.
- Remove the cup, shake off excess water, and air dry fully.
Microwave method:
- Unfold the sterilizer cup and place the clean menstrual cup inside.
- Fill with water until the cup is submerged.
- Place the lid on top but do not seal it. Leave a small gap to allow steam to escape. A sealed lid causes pressure buildup and overflow.
- Microwave on high for 2 to 3 minutes, or until water reaches a full boil.
- Remove carefully, allow to cool fully, and dry the cup before storing.
Storing the Sterilizer Between Cycles
Collapse the sterilizer cup flat once the cup has been sterilized and dried. Store it flat in a kitchen drawer or cupboard alongside the menstrual cup's storage pouch. It takes up virtually no space.
Do not store the sterilizer cup while wet. Allow it to air dry fully after each use.
Compatibility
The MomDaughts Collapsible Sterilizer Cup is compatible with all MomDaughts cup variants including the Short Tail, Long Tail, Double Tail, and Collapsible Cup. It is also compatible with most other silicone menstrual cup brands.
At MomDaughts, we believe correct care is what makes reusable period products work for years. Confidence in every cycle.
