Colour transforms your hair — but it also changes its structure. Whether you’ve gone a few shades lighter or fully bleached, chemically treated hair is more fragile, more porous and more demanding to look after. The reward for caring for it well is twofold: stronger hair und a colour that stays bright for longer.

Here’s what colour and bleach do to your hair, and how to keep it strong.

How to care for coloured and bleached hair — five key steps — SIMONE TRICHOLOGY

What colour and bleach do to the hair fibre

To deposit or lift colour, the process has to open the hair’s outer layer — the Kutikula — to reach inside the strand. Bleaching goes further, breaking down the natural pigment altogether. This leaves the cuticle raised and the fibre more porös: it loses moisture faster, tangles more easily, and is more prone to breakage. The more often hair is processed — and the lighter you go — the more pronounced this becomes. It’s the same fibre damage we cover in our guide on why hair breaks, concentrated by chemical processing.

How to keep coloured and bleached hair strong

Wash gently, and not too often

Coloured hair does best with a gentle, colour-safe shampoo and a little less frequent washing — every wash gradually fades colour and challenges an already fragile fibre. Use lukewarm rather than hot water, which opens the cuticle and speeds colour loss. Our guide on Wie oft sollte man seine Haare waschen? can help you find the right rhythm.

Replenish moisture and strength

Because processed hair loses moisture and is structurally weaker, it benefits from regular restorative care — conditioning and restructuring treatments that smooth the cuticle, improve strength and reduce the look of split ends. This is exactly what fibre-focused care is designed to do.

Protect the colour from fading

Colour fades fastest with heat, sun and harsh washing. Limit high-heat styling, use heat protection, and shield hair from strong sun — UV lightens and dulls colour, which is why Sommerschutz matters even more for coloured hair. Chlorine and salt water are also harsh on treated hair, so rinse after swimming.

Be gentle, especially when wet

Processed hair is most vulnerable when wet. Detangle softly with a wide-tooth comb from the ends upwards, avoid rough towel-drying, and don’t pull hair into tight styles while it’s fragile.

Space out your appointments

The more frequently hair is coloured or lightened, the less time it has to recover. Stretching the time between sessions — and keeping bleach to where it’s needed rather than re-processing the whole length — protects the fibre considerably.

Pflegehinweise für coloriertes und blondiertes Haar — SIMONE TRICHOLOGY

A note on bleached hair

Bleached hair is the most demanding case of all. Because lightening breaks down pigment and significantly raises porosity, bleached hair needs the gentlest handling, the most consistent restorative care, and the most patience between sessions. If your hair feels gummy or stretchy when wet, or breaks very easily after bleaching, ease off further processing and focus on rebuilding the fibre’s condition first.

The right routine for coloured hair

A colour-safe approach combines a gentle cleansing shampoo formulated for coloured hair with regular fibre-restoring care. SIMONE TRICHOLOGY’s Bio-Reparatur, Feuchtigkeits- und Faserrestrukturierung range is built to restore and protect treated hair — smoothing the cuticle, supporting strength and helping coloured hair stay in better condition between salon visits.

Want a routine matched to your hair?

Coloured and bleached hair varies enormously — how light you’ve gone, how often, your natural texture. Our Online-Haarklinik offers a free, no-commitment pre-assessment: a few targeted questions about your hair, and personalised guidance on the routine that will keep yours strong and your colour looking its best.

Die Produkte von SIMONE TRICHOLOGY sind kosmetische Produkte und dienen nicht der Diagnose, Behandlung, Heilung oder Vorbeugung von Krankheiten. Bei anhaltenden oder schweren Kopfhaut- oder Haarproblemen wenden Sie sich bitte an einen Arzt oder eine andere medizinische Fachkraft.

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