If you’re producing more breast milk than your baby needs, you have several good options ranging from donating it to babies in need to using it for skincare, cooking, or even keepsake jewelry. What you choose depends on how much extra you have, how you’ve stored it, and what matters most to you.
Donate to a Milk Bank
The most impactful thing you can do with surplus breast milk is donate it to a nonprofit milk bank. These banks supply pasteurized donor milk to hospitals, primarily for premature and critically ill newborns who can’t receive their own mother’s milk. The Human Milk Banking Association of North America (HMBANA) operates a network of accredited banks across the U.S. and Canada.
The screening process is straightforward but thorough. You’ll need blood tests for HIV, HTLV, hepatitis B, hepatitis C, and syphilis. You’ll also answer questions about your lifestyle and health history. Donors who smoke, use tobacco, cannabis, CBD products, recreational drugs, or certain medications or herbal supplements may be temporarily or permanently deferred. The same goes for recent blood transfusions, organ transplants, or risk factors for blood-borne illness.
Once approved, you pump and freeze your milk at home, then ship it (usually for free) or drop it off at a depot. Most milk banks provide collection supplies and cover shipping costs. The whole approval process typically takes a few weeks, so if you’re already building a freezer stash, it’s worth starting early.
Informal Milk Sharing
Peer-to-peer milk sharing through networks like Human Milk 4 Human Babies or Eats on Feets connects parents who have extra milk directly with families who need it. This is a faster, less formal route than a milk bank, and it can help families who wouldn’t otherwise qualify for banked milk or can’t afford it.
That said, the FDA does not recommend feeding your baby breast milk obtained directly from individuals or through the internet. Their concern is real: without formal screening, donated milk could carry infectious diseases like hepatitis B, hepatitis C, or HIV, or contain residues from medications or drugs. There’s also no guarantee the milk was pumped, handled, or stored safely. If you do choose this route, some families request blood test results from donors and ask detailed health and medication questions to reduce risk. It’s not the same as formal screening, but it’s better than nothing.
Build a Freezer Stash
Even if you don’t have immediate plans for your extra milk, storing it properly gives you flexibility later. The CDC guidelines for freshly expressed milk are simple: up to 4 hours at room temperature (77°F or cooler), up to 4 days in the refrigerator, and about 6 months in the freezer for best quality, though up to 12 months is acceptable. Store milk in the back of the freezer where the temperature stays most consistent, not in the door.
Label every bag or container with the date you pumped. Use the oldest milk first. A deep chest freezer holds temperature better than a standard freezer attached to your fridge, which matters if you’re stockpiling a large supply.
Dealing with High-Lipase Milk
Some parents discover their frozen milk smells soapy or metallic after thawing. This happens when a naturally occurring enzyme breaks down the fats in milk more quickly than usual. The milk is still safe, but many babies refuse it because of the taste. If you notice this, you can scald fresh milk before freezing it: heat it in a pan to about 180°F (82°C), just until tiny bubbles form around the edges, then remove it from heat immediately. Don’t let it reach a full boil. Cool it quickly and freeze. This deactivates the enzyme and preserves the taste. Unfortunately, milk that’s already been frozen with this issue can’t be fixed after the fact.
Breast Milk Baths
Adding breast milk to your baby’s bath is one of the easiest ways to use a small surplus. Breast milk contains fats and proteins that can soothe dry or irritated skin. Cleveland Clinic suggests adding a cup or two to a warm bath, just enough to make the water look slightly cloudy. That’s it. No special preparation needed.
This is a particularly good option for milk that’s close to its storage limit or milk your baby has rejected due to taste. It doesn’t need to be fresh, and frozen milk that’s been thawed works fine. Some parents also dab a small amount directly on patches of baby eczema or diaper rash, though evidence for this is mostly anecdotal.
Cooking and Baking
Breast milk can substitute for cow’s milk in many recipes your baby or toddler will eat: oatmeal, pancakes, mashed potatoes, smoothies, purees, and frozen popsicles. The catch is that heating breast milk above about 104°F (40°C) starts to break down some of its beneficial nutrients and immune components. So while baking with it is perfectly safe, you lose some of the nutritional advantages that make breast milk special in the first place.
For maximum benefit, use breast milk in no-cook or low-heat recipes. Mixing it into baby cereal, blending it into fruit purees, or freezing it into teething popsicles keeps those nutrients intact. If you’re making pancakes or muffins for a toddler, the milk still adds calories and protein even if some immune factors are lost to the heat.
Breast Milk Jewelry
Turning breast milk into wearable jewelry has become a popular way to commemorate the breastfeeding experience. The process typically involves either freeze-drying the milk and grinding it into a fine powder or pasteurizing it, then mixing it with a resin that hardens into a small stone-like bead. That bead gets set into a ring, necklace, or bracelet.
You only need a small amount, usually around an ounce, so this is a good use for a modest surplus or even milk that’s past its feeding window. Dozens of small businesses specialize in this. You mail a sample of your milk, and the jeweler handles preservation and design. Prices range from around $50 for simple pieces to several hundred dollars for custom work with precious metals. If you’re the DIY type, at-home kits with resin and molds are also available for a fraction of the cost.
Other Creative Uses
A few more options if you’re looking to use every last drop:
- Breast milk soap. Combined with lye and oils using a standard cold-process soap recipe, breast milk makes a gentle, moisturizing bar. Plenty of tutorials exist online, and it’s a practical project if you have a large surplus nearing its expiration.
- Breast milk lotion. Similar concept, using breast milk as the liquid base in a homemade lotion recipe. The fats in the milk add moisture, and you avoid the preservatives found in commercial products.
- Donation to research. Some universities and research institutions accept breast milk donations for studies on infant nutrition, immunology, or lactation science. Availability varies by location, but it’s worth checking with nearby academic medical centers.
Whatever you decide, the most important thing is that your extra milk doesn’t go to waste. Whether it feeds another baby, soothes your child’s skin, or becomes a piece of jewelry you wear for years, every ounce of it has value.