7 Surprising Uses for Expired Breast Milk
We all know breast milk is sometimes called "liquid gold" — packed with nutrients, antibodies, and healing properties. But what happens when it expires? Whether it’s milk that's been stored too long, has touched bacteria, or just isn’t suitable for feeding anymore, don’t toss it just yet.
Here are 7 practical, surprising ways you can still put that milk to good use — backed by mum wisdom, science, and a zero-waste mindset.
Image credit: Flavia Gava
1. Heal Cracked Nipples
Breastfeeding can lead to sore, cracked nipples — especially in the early weeks. Instead of reaching for cream, try applying a few drops of expired breast milk directly to the area.
It contains natural antibodies and moisturising fats that help soothe and repair the skin. Just express a little milk after a feed or pump, rub it onto your nipples, and let it air dry.
2. Breast Milk Baths
Add a few ounces of expired breast milk to your baby’s bath for a naturally soothing soak. The fats and vitamins help moisturise dry or sensitive skin, and it's especially helpful for conditions like eczema or nappy rash.
Fill the tub with warm (not hot) water, swirl in the milk, and let your baby relax for 10–15 minutes. Bonus: it’s calming for you, too.
3. Treat Baby Acne
Those tiny red spots on your newborn’s face? Totally normal. Expired breast milk can help soothe baby acne thanks to its antibacterial and anti-inflammatory properties.
Use a clean cotton ball to dab a bit of milk onto the affected area, and let it air dry. Repeat a few times a day — many parents notice a difference within a few days.
4. Treat Nappy Rash
The enzymes and antibodies in breast milk can help calm red, irritated bums. After gently cleaning your baby’s nappy area, apply a small amount of expired milk directly to the rash. Let it air dry before putting on a fresh nappy.
Repeat this process with each change for best results.
image credit: Fanny Renaud
5. Relieve Ear Infection Pain
While not a medical treatment, some parents use breast milk to soothe mild ear infections. Warm a small amount of expired milk to body temperature and place 1–2 drops into the affected ear using a clean dropper.
It may help reduce inflammation until you’re able to see your healthcare provider. Always check with them first before trying this.
6. Treat Eczema
Eczema can be stubborn — but some parents find relief by applying breast milk directly to flare-ups. The natural fats and anti-inflammatory compounds help soothe itchiness and dryness.
Apply a thin layer to the affected skin and let it soak in. You can also add expired milk to bathwater for an all-over effect.
7. Treat Cradle Cap
Cradle cap causes dry, flaky patches on baby’s scalp. To help soften and remove them, massage a bit of expired breast milk into the scalp, let it sit for a few minutes, then gently brush with a soft baby brush.
Follow up with a mild shampoo to rinse out the milk.
Expired breast milk may not be safe for feeding, but it’s far from wasted. Its natural healing, soothing, and moisturising properties make it a brilliant multi-tasker for common baby concerns.
Just be sure to label your milk clearly so you can separate expired milk from your feeding stash.
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Seen other uses we’ve missed?
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