A colour leaves the chair brighter than it will ever be again. That isn't a fault of the work, it's chemistry. The first wash takes a little. The first fortnight takes more. By about week six the tone settles into the place it will hold for the rest of the cycle, if the care between visits is sensible. What follows is the routine we hand to clients who sit down with us on Paisley Road West and want to know, plainly, how to maintain colour-treated hair at home.

We won't pretend this is a one-size routine. The care we'd give a client on a six-week root cycle is different to the care we'd give a balayage that we'll next see at week twelve, or a keratin blowdry that needs particular soaps in its first forty-eight hours. The principle is the same. Slow the fade by treating the cuticle gently. Restore moisture on a rhythm that maps to your appointment cycle, not to a stranger's blog.

The first week sets the colour you'll live with

What happens at home in the first seven days after a colour does more, for or against the result, than anything in the weeks that follow. The cuticle has been opened to let pigment in. It takes a few days to close fully. If you wash on day one or day two, you flush out colour molecules that were still settling. Most accounts agree on a wait of 48 to 72 hours before the first wash, longer if the work was a heavy lift or a full head of bleach.

In the first week we'd ask for two things. Don't overwash. Three washes that week, four at most, is plenty. And use a sulphate-free shampoo. The professional guidance on colour fade is consistent with what we see at the bowl. Harsh detergents lift the cuticle and accelerate porosity, which is the loss of moisture and pigment through a roughened hair shaft.

Glasgow water is harder than it looks

Glasgow tap water is officially soft on the national scale, but the mineral content varies by tenement, by postcode, and especially by which pipes a flat in Govan or Ibrox or Pollokshields was last fitted with. We see the consequences at the bowl. Cool blondes pick up a faint warmth they didn't leave with. Coppers go duller faster than they should. The fix isn't a filter on every tap, useful as that would be. The fix is a clarifying treatment at the bowl once every six to eight weeks, between full colour visits, and a gentler at-home wash in between. We've set out a colourist's note on hard water elsewhere in the journal for clients who want the longer version.

Wash less, rinse cooler, and forget the hot tap

This is the single most under-rated piece of advice we give, and the cheapest. Hot water swells the cuticle. Swollen cuticles release pigment. A lukewarm rinse, then a final cool blast for the last fifteen seconds, closes the cuticle down and locks the colour in. It's an old hairdresser's trick and it works. Aim for two or three washes a week, no more, with a dry shampoo on the days in between if you need it. The scalp adjusts. Skin is sensible like that.

The deep conditioner belongs to week three onward

A deep conditioning treatment, applied on the lengths and ends and left for ten minutes, is the workhorse of colour aftercare. We do this at the bowl as a standalone service, often paired with a scalp massage, and we'd recommend a home version at least fortnightly between visits. Apply to towel-dried hair, not soaking wet. Comb it through with a wide-tooth comb. Wrap in a warm towel if you have time. The heat helps the mask penetrate.

The first home mask, we'd say, comes at the end of week one. After that, every two weeks for fine to medium hair, every week for thick or curly hair, or for hair we've lifted by more than three levels. The deep conditioning we offer at the bowl pairs well with this rhythm and the full list of treatments sits on our services page.

Heat protection, and the case for air drying when you can

A heat protectant doesn't make a flat iron safe. It evens out where the heat lands on the shaft, and that's the most honest thing we can say about it. Use one whenever you put a tool over 150 degrees on dry hair. Air dry to about 80 percent first if your schedule allows. The shorter the time under the dryer, the less moisture leaves the hair, and the longer your colour reads as fresh.

The small habits that compound

Brushing wet hair with a fine brush tugs the cuticle open. Use a wide-tooth comb from the ends upward. A microfibre wrap or a cotton t-shirt instead of a rough towel saves more colour than any expensive serum. A silk or satin pillowcase reduces breakage at the canopy, which is where most clients notice the fade first, because that's where the light catches.

The chair you only leave when the work is right.

Mapping the routine to your appointment cycle

This is the part the generic guides miss. The care at home should match the spacing of your visits. A root touch-up client we see every six weeks needs a sulphate-free shampoo, one home mask a fortnight, and a clarifying wash in the last week before her next visit. A balayage client we see at week twelve needs the same shampoo, two masks a fortnight from week four onward, and a toner refresh at the bowl if the brass starts to lift around week eight.

The honest grow-out, the one that doesn't leave a hard line at the parting, is a craft point in its own right. We've written about the colourist's method for growing out hair colour elsewhere in the journal, and the at-home routine here sits alongside it.

The keratin blowdry client is different again. The first 48 hours after a keratin treatment require a sulphate-free, sodium-chloride-free shampoo, and no hair ties or pinning that could leave a mark. After that, the colour holds well alongside the smoothing for as long as the keratin does, which is roughly twelve weeks. We've set out the aftercare for those twelve weeks as its own piece. That part of the rhythm we walk through at the consultation. In twenty-eight years on the chair, no two heads have held a treatment in quite the same way, which is why the conversation matters.

When to come back

We'd rather see a client at the right time than the soonest. If the parting is bright and the ends still read well, the appointment can wait a week. If the brass is showing through the canopy at week ten, that's the conversation. Book by feel, not by reminder. The work we do at the bowl, and the care we ask you to do at home, both buy more time between visits when they're matched honestly to the head we're working with.

If your current colour is sitting somewhere uneasy and you'd like to talk it through, the consultation is the place we start, by appointment, on Paisley Road West. Book an appointment when the timing is right for you.