Why Some Fabrics Pill and Others Do Not
Launch library · evergreen read

Pilling, those small balls of fibre that form on a fabric's surface after wear and washing, happens when shorter, weaker fibres work loose and tangle together through friction, which is why fabrics made from shorter staple fibres or loosely spun yarn tend to pill more readily than tightly spun alternatives.
Natural fibres like fine, long staple cotton and good quality silk generally resist pilling better than cheaper synthetic blends or loosely woven fabric, since their fibres are longer and more securely bound within the yarn itself, making it harder for loose ends to work free and tangle into visible little balls.
Gentle washing, turning garments inside out before machine washing, and avoiding excessive friction against rough surfaces all help reduce pilling regardless of fabric type. Once pilling does appear, a fabric shaver or a careful hand can remove it without damaging the underlying weave underneath, something experienced shoppers learn to check without being told.