Wool itchiness usually comes down to fibre thickness, processing methods, and sensitivity.
1. Coarse Wool Fibres (High Micron Count)
Wool fibres vary in thickness.
- Thick fibres (higher microns) feel firm and can prickle the skin.
- Fine fibres bend softly and feel smooth.
Many older woollen garments were made from 30–40 micron fibres, which naturally feel coarser.
2. Traditional Processing Methods
In previous decades, wool processing wasn’t as refined, meaning even good fibres could feel rough if not thoroughly combed, cleaned or finished.
3. Individual Sensitivity
Some people experience irritation from certain fibres, especially when worn directly against the skin, though this is less common with fine wools.