Combed yarn and what it does to the surface

Short answer: Combing removes the shortest fibres before spinning. Only the long ones remain, which gives a surface with almost no free ends. The result is a fabric that stays smooth longer and forms fewer pills.

Short fibres are sorted out

The raw material for yarn contains fibres of many different lengths. In combing, the fibres pass through fine combs that pull out the short ones, so only the longest become yarn. The long fibres are also laid parallel, so they lie in the same direction when spun. See women's bamboo sweatshirts.

Why fibre length matters

A short fibre has two ends close together, and at least one often sticks out of the thread. A long fibre can be twisted many times around the others before it ends, so it sits more firmly. The more long fibres, the fewer ends stick out and the smoother the thread. That is the whole idea behind combing.

The surface becomes smooth

Fewer free ends mean less fluff and fewer pills after many washes. Pills form when loose fibre ends rub against something and tangle into small balls. With fewer loose ends, there is less to tangle. The fabric therefore looks neat for longer. See women's bamboo sweatpants.

Where you notice it most

The difference shows most clearly on clothes that are rubbed a lot in daily life. That means the inner thighs of trousers, under the arms of a sweatshirt and along the sides where the arms swing past the body. Fabric made from combed yarn stays smooth longer in places where uncombed fabric quickly turns rough.

There is waste in the process

Part of the raw material is sorted out, so combed yarn costs more than uncombed. It also takes an extra step in production. The short fibres can be used for other purposes, but they do not go into the combed yarn. The price reflects both the waste and the extra work. See women's bamboo joggers.

Combed and soft

When the fibres lie parallel and close, the thread becomes not only smoother but also softer. The surface feels even against the skin, and there are fewer tiny fibre ends that can tickle or prickle. That makes combed yarn well suited to clothes worn close to the body all day.

Protect the surface in the wash

Even a combed fabric can pill if it is treated roughly. Wash inside out at a low temperature with a mild detergent. Wash it with similar fabrics rather than towels or jeans, which rub more. Let the garment dry on a line or flat so the surface is not worn unnecessarily.

If pills appear anyway

If a few pills appear, they can be removed gently with a lint roller or a fabric shaver. Go carefully so you do not pull out more fibres. It is usually a sign that the fabric has had a lot of friction in one spot, not that the whole fabric is worn.

Frequently asked questions

What does combed yarn mean

That the shortest fibres are sorted out before spinning, so only the long ones go into the thread. It gives a smoother, softer surface with fewer free ends.

Why does combed yarn cost more

Because part of the raw material is removed in the process, and because it takes an extra production step. The price reflects the waste and the extra work.

Can you see the difference in a combed fabric

Yes, over time. It stays smooth longer and forms fewer pills than uncombed fabric, especially where the garment rubs the most.