How to Make Your Colour Last: Homecare After Highlights and Colour
The colour you walk out of the studio with is the best it will ever look. What happens over the next six to eight weeks decides how long it stays that way. Homecare isn't an upsell. It's the other half of the service.
Why professional homecare matters after colour
Lightening and colouring work by opening the hair's outer layer, the cuticle, so pigment can be lifted or deposited. Afterward, the hair is more porous: it takes on water faster, and it lets colour go faster too.
Most drugstore shampoos are made to suit everyone, which usually means stronger cleansers and formulas that aren't designed to help colour-treated hair seal back down. Professional colour-care lines are built for this exact stage, with gentler cleansers, a lower pH that helps close the cuticle, and UV filters that slow fading.
That's also why we recommend specific products at your appointment rather than a one-size-fits-all routine. A toned blonde, a glossy brunette and a vivid copper all fade in different ways and need different care.
The first 72 hours
If you can, wait 48 to 72 hours before your first shampoo. The first wash is when colour loss hits hardest, and giving the hair a couple of days to settle makes a visible difference.
Wash smarter, not just less
Use a sulfate-free, colour-safe shampoo. We break down why in Sulfate vs. Sulfate-Free Shampoo.
Turn the water down. Hot water swells the cuticle and lets colour escape. Lukewarm to cool is best.
Wash less often. Two or three times a week is plenty for most hair types.
Blondes: go easy on purple shampoo. Once a week, or as your stylist directs. Overusing it can leave a dull, lilac cast.
Add a weekly treatment. A mask, or a bond-building treatment if your hair has been lightened, keeps it strong and helps it hold onto tone.
Why we recommend blow-drying over air-drying
This one surprises people. Air-drying feels like the gentle option: no heat, no damage. But hair is at its most fragile when it's wet. Water swells the hair shaft and lifts the cuticle, and the longer hair stays wet, the longer that cuticle stays open and colour has a way out. On freshly lightened or very porous hair, you may even see colour bleeding onto your towel or pillowcase.
There's research behind this. A 2011 study in the Annals of Dermatology found that although a hair dryer caused more surface damage than drying naturally, using one about 15 cm from the hair with continuous motion caused less damage overall than air-drying, because long exposure to water damaged the inner structure of the hair.
The key is doing it with protection. Here's how:
Always use a heat protectant on damp hair, worked through the mid-lengths and ends.
Rough-dry on medium heat until the hair is about 80% dry, keeping the dryer moving and roughly a hand-span away.
Point the nozzle down the hair shaft, from roots to ends, to smooth the cuticle flat.
Finish with the cool shot to set the style and lock in shine.
Keep hot tools moderate. Very high heat can fade toner and shift your colour, especially on blondes.
If you'd still rather air-dry some days, blot (don't rub) with a microfibre towel, use a leave-in with heat and UV protection, and try not to go to bed with soaking wet hair.
Protect it from everyday faders
Sun. UV breaks down colour pigment. A leave-in with UV filters, or a hat, helps a lot in summer.
Chlorine. Wet your hair with clean water and apply a leave-in before swimming, so it absorbs less pool water.
Hard water. Toronto's tap water is moderately hard, and mineral build-up can make colour look dull or brassy. An occasional chelating treatment helps.
Keep it fresh between appointments
Even with perfect homecare, tone naturally softens over time. A gloss or toner refresh between colour appointments brings back shine and tone without a full colour service. Ask your stylist whether one makes sense for your hair.
Shop this post
Help your colour last
KERASILKEssential Repairing Shampoo
KERASILKSpecialist Color Sealer
GOLDWELLBlondes & Highlights Anti-Yellow Shampoo
Order online and pick up at the studio, or shop all products →