Your breast milk changes 9 times
A living composition, not a fixed formula
Breast milk is not a static product. It changes colour, density, and composition across days and weeks — and also within a single feed, across the day, and when your baby is unwell. Knowing these nine «versions» helps you trust the process: what you see at the breast or in the pump is not a mistake. It is physiology.
- It changes over time (from the first days through the months).
- It changes within each feed (foremilk and hindmilk).
- It changes with the time of day and your baby's state of health.
1. Colostrum (days 1–5)
The first milk: thick, golden, and full of antibodies. Small in quantity, immense in protection. Colostrum prepares the gut, offers passive immunity, and gives the newborn exactly what is needed in the earliest days — without requiring large volumes.
2. Transitional milk (days 5–14)
It increases in volume and nutrients as your baby's needs grow. The colour becomes creamier and the breast often feels fuller: this is the natural shift from colostrum toward mature milk.
3. Early mature milk (weeks 2–6)
Balanced nutrition created specifically for your baby. It supports growth and strengthens the immune system. In this stage feeding often settles: supply and demand sync more clearly.
4. Mature middle milk (6 weeks – 3 months)
An ideal balance of fats, proteins, and carbohydrates. It supports brain and body development during a period of intense growth and increasing alertness.
5. Mature late milk (3–6 months)
It adapts to the changing needs of your baby as they explore and grow. The body keeps «tuning» composition to age, activity, and rhythms — even when the breast no longer feels as full as it did at the start.
6. Foremilk (at the beginning of each feed)
More watery and rich in lactose, to quench thirst and give the first impulse to the feed. It is normal for the milk at the start to look thinner: this is not «diluted milk», but the part designed to hydrate and start the suckling.
7. Hindmilk (at the end of each feed)
Richer in fats and calories, to satisfy hunger and support healthy weight gain. That is why it matters to let the baby finish the breast at their own pace: the creamier milk arrives toward the end of the feed.
8. Night milk (evening and night)
Higher melatonin content to support deep sleep and healthy circadian rhythms. Night milk is not the same as morning milk: the body also programmes the night feed as part of how the baby learns sleep.
9. Milk for illness (when your baby is sick)
Your body creates additional immune factors to help fight infections. Through contact and breastfeeding, the maternal immune system «reads» what the baby needs and answers in the milk — living, personalised support in real time.
Every drop is created specifically for your baby.