Why Your Hair Breaks When You Brush It (and How to Stop It)

Your brush is probably the problem.

Most people blame their hair. They buy protein treatments, cut out heat, spend money on masks and the breakage keeps coming. The brush sits on the shelf, completely above suspicion, doing damage every single morning.

The brush is almost always the problem

The average brush is designed to look good in a bathroom. The bristles are stiff, the base is rigid and there is no flex in the body, which means every tangle your brush hits gets pulled through with full force rather than eased apart. On fine hair, colour treated hair or hair with extensions, that force snaps the strand. Not every time. But over time it adds up.

The pins on most brushes are also too close together, which means they grip rather than glide. Instead of separating the knot, they catch it. The hair has nowhere to go except out.

Extensions make it worse

If you have extensions, the risk is higher. A rigid brush drags straight into the bond or weft, putting stress on the attachment point and on the natural hair above it. Over time that is how you lose extension hair and your own hair at the same time. We have written more about choosing the right brush for extensions in this post.

Colour treated hair is more fragile than people realise

Colour changes the structure of the hair shaft. It opens the cuticle to deposit or lift pigment and even after it closes back down, the hair is more porous and more vulnerable to mechanical damage than it was before. A brush that would be fine on untreated hair causes more damage on colour treated hair because the hair itself has less resistance to offer.

As a colourist, you notice this quickly. You can do perfect colour and watch it deteriorate faster than it should because the client goes home and brushes it with the wrong tool.

What a brush should actually do

A good detangling brush flexes. When it hits a knot, the body absorbs some of the resistance rather than transferring all of it straight to the hair. The pins are spaced to glide rather than grip and the tips are rounded so they move along the strand instead of catching on it.

It also helps to start from the ends and work upward, clearing the lower knots first and then moving higher once the ends are free. The right brush makes that easier because it has enough give to work through a tangle without forcing it.

The Brush

I spent years recommending brushes to clients and being quietly unhappy with all of them. The bristles were too stiff, the spacing was wrong or they looked the part but pulled more than they should. So I made one. The Brush is designed for extensions, colour treated hair and hair prone to breakage. You can read more about why I built it in this post.

The first run is 600 units and it ships after 15 July 2026. Preorder yours here.