Does my baby have a wool allergy or is it irritation? The facts
On TikTok and Instagram I get asked every day: "My baby gets red spots from wool — is it allergic?" As a nurse I understand that fear, but in 95% of cases something completely different is going on. A true wool allergy is in fact extremely rare.
In this article I explain how you can recognise the difference and why the quality of the wool is everything.
1. The myth of the scratchy jumper
When a baby's skin turns red or develops bumps after wearing wool, we often immediately jump to the conclusion: allergy. But did you know that this is usually mechanical irritation?
A baby's skin is incredibly thin. When you use a garment made from "regular" sheep's wool, the fibres are often thick and stiff (think 30 microns or more). These fibres do not bend — they prick like tiny needles against the nerve endings of the skin. The result? Redness and itching. This is not an allergy, but simply a reaction to a fibre that is too coarse.
2. What is a true wool allergy?
A true allergy is usually a reaction to lanolin (wool fat). Lanolin is naturally present in wool to keep the sheep dry and warm. Although lanolin allergy does occur, it is very rare in newborns. In addition most of the lanolin is removed during the careful cleaning process of high-end merino wool.
How do you recognise the difference?
Irritation: The redness only appears on the areas where the clothing directly touches the skin and usually disappears quickly once the clothing is removed.
Allergy: The reaction is more intense (sometimes with blisters), can spread across the body and lasts longer.
3. Why merino wool (usually) does work
At Moalie we work with superfine merino wool (12–18 microns). These fibres are so thin that they bend as soon as they touch the skin. They simply cannot prick. Because merino wool also contains the same proteins (keratin) as our own skin and hair, the body recognises it as something natural and safe. Read more about our materials on our merino wool collection page.
4. The check: how to know for sure
Still not sure? Then do the Moalie test:
- Choose a garment made from guaranteed superfine merino wool (like our rompers or hats).
- Let your baby wear it for a few hours.
- Does the skin stay calm? Then the earlier reaction was simply irritation caused by an inferior type of wool.
Conclusion
Don't be immediately put off by a red spot from that one thick grandma jumper. The benefits of wool — such as better sleep and perfect temperature regulation — are too valuable to miss out on. Choose quality, choose superfine fibres and give your baby's skin the chance to get used to the softest protection there is. Discover our merino wool collection.
With love,
Daniëlle
Founder Moalie & Neonatal nurse
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