Your Mooncup is made from soft, medical-grade silicone – designed to last for years with the right care. To keep it safe and fresh, boiling it between cycles is the simplest and most effective way to sterilise it. But how long should you boil it? And what’s the best way to do it without damaging your cup?
We’ve put together this guide to take the guesswork out of boiling your Mooncup.
Why boiling matters
Your Mooncup sits inside your body, so keeping it hygienic is non-negotiable. Daily rinsing with water (and, if you like, a fragrance-free soap) keeps things clean while you’re on your period. But at the beginning and end of your cycle, a quick boil makes sure your cup is completely sterilised – free from bacteria, fungi, and viruses.
Boiling also helps keep your Mooncup in good condition, so it stays soft, flexible and reliable for years to come.
How long to boil a Mooncup
Because it’s made from medical-grade silicone, your Mooncup can withstand boiling temperatures without damage – as long as you don’t overdo it.
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Recommended time: 5–7 minutes
This is long enough to sterilise your cup thoroughly, but short enough to prevent wear.
Step-by-step: Boiling your Mooncup
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Choose a clean pan – Make sure there are no food residues or oils that could cling to the cup.
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Fill with plenty of water – Enough to fully cover the Mooncup.
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Bring to a rolling boil – Then gently place the cup in.
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Set a timer for 5–7 minutes – Don’t guess; timing matters.
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Keep an eye on the pot – Don’t let the water boil dry (silicone can scorch if it touches the hot pan).
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Remove carefully – Use tongs or a spoon to lift the cup out.
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Air-dry – Place it on a clean surface or kitchen roll. Avoid towels, which can transfer lint.
Once cool and dry, store your Mooncup in its breathable cotton pouch until next time.
Common mistakes to avoid
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Over-boiling – Longer than 7 minutes won’t make your cup “cleaner” but may shorten its lifespan.
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Boiling dry – If the water evaporates, the silicone can burn. Always top up the water if needed.
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Dirty pans – Any grease or food residue can transfer to your Mooncup.
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Microwave boiling – Uneven heating can damage silicone. Stick to the stove.
When to replace your Mooncup
With proper care, your Mooncup will last for years (some people over 20!). But keep an eye out for:
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Cracks, tears, or a sticky texture.
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Persistent odour even after boiling.
If you notice any of these, it’s time for a replacement.
Final word: A simple ritual for peace of mind
Boiling your Mooncup isn’t just about hygiene – it’s a little ritual of care that helps your cup stay safe, soft and ready whenever you need it. With just 5–7 minutes of boiling between cycles, you’ll keep your Mooncup fresh and reliable for years to come.
Clean, simple, sustainable – just the way we like it.
