Colour fades three ways: washed out, heat-faded, and sun-bleached. Each has a countermeasure, and together they make a substantial difference to how long a colour lasts.

The first 72 hours

The cuticle stays slightly open after colouring, and pigment is at its most vulnerable.

  • Wait at least 48 hours before the first wash, 72 if you can
  • No heat styling in that window if avoidable
  • No swimming

More colour is lost in these three days than in the following three weeks.

Washing

Less often. Every wash removes some pigment. Two or three times a week roughly doubles how long colour lasts compared with daily washing.

Cooler water. Hot water opens the cuticle and pigment escapes. Lukewarm, cool final rinse.

Colour-care or sulphate-free shampoo. Milder cleansing means less pigment loss. This is the strongest case for sulphate-free formulas.

Between washes, dry shampoo at the roots buys a day.

Heat and sun

Heat styling accelerates fading and damages already-processed hair. Lower temperature, always use protection, take days off.

UV fades colour — visibly so on reds and coppers. A leave-in with UV protection, or a hat in strong sun.

Chlorine and salt water both strip colour quickly. Wet hair with clean water and apply conditioner before swimming, so it absorbs less pool water.

Condition matters for colour

Coloured hair is chemically processed hair, and damaged hair holds pigment badly — a roughened cuticle lets colour escape and reflects light poorly, so the colour looks dull as well as faded.

So the repair routine and the colour routine are the same routine:

  • Conditioner every wash
  • A mask once or twice weekly
  • Leave-in on damp ends
  • Regular trims

Which colours fade fastest

Reds and coppers first, by a wide margin — the molecules are larger and sit less deeply. Blondes fade less but discolour, picking up brassy tones from water and sun. Brunettes hold longest.

If you have red hair, everything above matters more.

Realistic expectations

Colour fades. Good care slows it and keeps hair looking healthy while it does; nothing prevents it, and products claiming permanent colour lock are overpromising.

For shampoo and mask options, see the shampoo guide.