Most "hair fall" after colouring is actually breakage, the coloured strand snapping because the dye has dried and weakened it, not hair leaving the root, which is why the fix is deep conditioning, gentle handling and colour-safe washing rather than anything drastic. Genuine root shedding after colour is less common and usually points to an allergic reaction or unrelated stress. Here is how to tell which you have and stop it.

Breakage or true shedding? Tell them apart

Coloured hair that snaps mid-length, leaving short broken pieces with no bulb, is breakage, caused by the dye drying and weakening the shaft. Whole hairs coming out with a small white bulb at the root are shedding. Breakage responds quickly to the conditioning and handling below. A sudden increase in true shedding a couple of months after a big colour change can be stress-related (telogen effluvium) and usually recovers, but persistent shedding is worth a GP visit.

Post-colour care that stops breakage

1. Switch to colour-safe, sulphate-free washing

Sulphates strip both colour and the moisture coloured hair badly needs. A gentle sulphate-free shampoo and conditioner keep strands supple and hold the colour longer.

2. Deep condition weekly

A rich mask with argan oil or shea butter restores the moisture dye removes, so hair bends instead of snapping. This is the single most effective step.

3. Wash gently and less often

Wait 48 to 72 hours after colouring for the first wash, then two to three times a week in lukewarm (not hot) water, massaging with fingertips.

4. Cut the heat

Colour plus daily heat is what tips hair into breakage. Air-dry when you can; heat protection and lower temperatures when you cannot.

5. Protect from sun and handle gently

UV fades colour and dries hair, wear a hat in strong sun. Detangle from the ends up with a wide-tooth comb, and trim split ends so they cannot travel.

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A gentle, sulphate-free daily base for coloured hair, so washing does not strip moisture or fade your shade. With biotin, argan oil and rosemary. A supportive routine, not a medical treatment.

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Feed it from within

Colour-stressed hair recovers faster with the right raw materials: protein, omega-3s, iron and zinc, plenty of water, and a varied diet of fish, eggs, nuts, fruit and vegetables. Biotin and zinc contribute to the maintenance of normal hair.

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Frequently asked questions

Is hair fall after colouring permanent?

Rarely. Most is breakage that stops with conditioning and gentler care. Colour-related shedding usually recovers within months; only severe, repeated over-processing or an untreated scalp reaction risks lasting damage.

How soon after colouring should I wash my hair?

Wait 48 to 72 hours so the colour sets, then wash two to three times a week with a sulphate-free, colour-safe shampoo.

Can I colour again straight after a chemical treatment?

No, wait around two weeks (longer after bleach) and ideally consult a colourist, stacking chemical services causes breakage.

What if my scalp reacts to the dye?

Stop immediately, rinse thoroughly and see a GP or pharmacist. A reaction is not something to push through, and always patch-test new dyes 48 hours ahead.

Does colouring cause hair loss from the root?

Usually no, it causes breakage. True root shedding after colour is more often coincidental stress or an allergic reaction than the dye pulling hair out.

Stop hair fall after colouring by treating the real cause, breakage from dryness, with deep conditioning, colour-safe sulphate-free washing, less heat and gentle handling, and by taking any scalp reaction seriously. For colour-related damage specifically, see our guides to repairing bleach-damaged hair and stopping hair breakage.