There is a moment, often in spring, when a guest sits down and asks how to grow out hair colour without starting over. Done with the eight-week root, done with the upkeep, done with the saturation that has built up over a decade of single-process colour. She is not done with hair. She is done with one version of it, and she wants the next one to be hers.
The guests who come in for a grow-out tend to fall into three groups. The first is tired of the cycle, eight weeks at a time, since her twenties. The second has had something done elsewhere and wants to return to a colour closer to her own. The third has decided to let the grey come in, on her own terms, in her own time. The work is different for each, but the principle is the same. The grow-out is planned. It is not endured.
What follows is the method we use at the chair, drawn from twenty-eight years on the bowl and the foil, and from a craft older than any salon. It assumes you want to grow out gracefully, not abruptly. If you want abrupt, the scissors are quicker.
The honest timeline of a grow-out
Most grow-outs at the chair take between twelve and eighteen months. The fastest we have ever seen, with a guest who came in with a clear head and a clean shape to start, was about nine. The slowest, with a long history of single-process and a base she had been tinting since her thirties, ran past two years. There is no average. There is your hair, the colour that has been put on it, and the rate at which it grows.
Hair grows roughly a centimetre and a quarter a month. For a guest growing out a colour from a chin-length bob, that means the regrowth catches up with the lengths in eight or nine months. For shoulder-length hair it is closer to fourteen. For mid-back it is the full eighteen, and sometimes longer. The clock starts the day we agree the plan, not the day she first thought about it.
What changes the timeline is mostly the cut. We can take a guest from twelve months to seven with the right scissors, if she is willing. The reverse is also true. If she has no intention of losing length, the work is slower, and the line between dyed and natural will sit visibly on her hair for most of the grow-out. Neither path is wrong. Both want to be planned.
The other variable is the colour underneath. Permanent tint sits inside the hair and does not wash out; it can only be lifted, cut, or grown past. Demi-permanent, which fades over six to eight weeks, leaves a softer fade behind it. We will ask about both at the consultation, because the answers change the plan.
The demarcation line, and what it tells you
The demarcation line is the boundary between what you have grown and what was put on. On grey hair growing in under a permanent base, it is the most obvious tell. On a guest who has highlighted for years, it is barely there. On a single-process brunette who is going lighter, it is a band of darker root that sits across her head until we decide what to do with it.
That line is information. It tells us, before anything else, what kind of grow-out we are looking at. A sharp, high-contrast line means the base colour is doing most of the work. A diffuse line means there is already lift or breakage in the pattern, which is easier to soften. A line that sits an inch from the scalp tells us we have eight weeks of regrowth, and three options to discuss. A line that runs to two inches is closer to four months; the choices narrow, and the planning shifts from softening to bridging.
We do not try to make the line disappear. We try to make the line interesting. There is a difference.
Three starting points, three methods
Most grow-outs at Endz start from one of three places. Highlights. Balayage or ombre. Or a block of single-process colour, often covering grey, sometimes covering a younger choice that has worn its welcome out.
Highlights are the kindest place to start. The natural base is already broken up at the root, and the regrowth slots in between the highlighted pieces without an obvious line. The work at the chair, then, is to fade the lift toward the ends and let the natural colour catch up at the top. We may add cooler lowlights every eight to twelve weeks, in shades closer to her natural depth, to thicken the look as the highlights soften. Done well, a highlights grow-out can pass through a dinner party at month six without anyone noticing the work has changed direction.
Balayage and ombre are the easiest of the three. The work was never meant to sit at the root, so the grow-out is, in a sense, what the technique was always heading toward. We can sometimes leave a hand-painted head alone for six months and rejoin it with a single gloss appointment. The honest sales pitch for balayage is not the colour on the day. It is the grow-out.
For the technical detail of how that work sits in the first place, our explainer on hand-painted balayage in Glasgow covers the freehand method we use at the chair.
Block colour, the single-process tint, is the hardest place to start. The line is there, the contrast is sharp, and the only way to soften it is to introduce dimension that breaks the line up. We do that with strategically placed highlights at the top section, with a tint-back at the ends if she is going darker, or with a slow programme of lowlights timed to lift the contrast away from the scalp. None of these are quick. All of them work.
Grey, and the longer grow-out
Grey grow-out is its own piece of work. The hair behaves differently, the behaviour of colour at the chair is different, and the timeline of acceptance, both visual and emotional, runs longer than it does for any other colour change.
Grey is not the absence of colour. It is hair without melanin, with a cuticle that often sits more open than pigmented hair, which is why it can look wirier or coarser at the front. We see this most often around the parting and the temples, where the structure of the hair itself has shifted as much as the colour.
For a guest growing out grey under a permanent tint, we work in three phases. Phase one is breaking the contrast. We add a head of fine highlights or a softer balayage to introduce light pieces near the root, which closes the visual gap between the dyed lengths and the silver regrowth. Phase two, around month four or five, is a gloss to take the brass out of the previously tinted lengths and bring them closer to the cool tone of natural grey.
Phase three is the cut. At some point, often around month nine or ten, a guest will sit down and say she is ready to see the line gone. We trim to it. Sometimes we cut above it. The reveal is the moment the grow-out becomes a finish.
There is also the question of cut along the way. We tend to take a guest into shorter shapes during a grey transition, not because she should lose length, but because layered shapes carry the contrast more kindly than blunt one-length cuts. The eye is given somewhere to settle other than the line.
For guests with a darker natural base, the lift pattern matters more than it does on lighter hair. The colourist's view on balayage on dark hair is the piece we point to most often during the grow-out plan.
The middle of a grow-out, in three tools
Between the start of a grow-out and the finish, the colourist's role is to reduce contrast without resetting the clock. Three tools do most of the work.
A tint-back, also called re-pigmentation, is for guests whose ends have been lightened to a point where the natural base will never catch up to them. We deposit pigment back into the lengths in stages, never in a single sitting. Done over three appointments, with a gloss between each, the lengths come down to a tone that meets the natural base inside twelve months.
A gloss, sometimes called a toner, is a lighter version of the same idea. It refreshes tone without resetting the base colour. It is what we reach for to neutralise yellow in a previously blonde grow-out, or to soften the warmth in a guest moving from copper back to her natural mid-brown. A gloss appointment is the most useful one in any grow-out plan. It rarely makes the work look dramatic. It makes it look intentional.
Lowlights are the third tool. We pick up sections of lifted hair and weave them back to a darker tone, closer to the natural depth at the root. The effect is to widen the natural-looking range of colour through the hair, so the eye stops looking for the line. Lowlights, done well, are invisible. The hair just looks more like itself.
None of the three should be confused with a fix. The grow-out is the work; these are the tools we use to make the work bearable to look at along the way. A guest who tries to skip the middle stage with one large appointment usually ends up further from her natural colour than she started, and we have to begin again.
Pricing for each of these sits on the services page, though the exact plan, and how the appointments space out, is agreed at the consultation.
The home routine that keeps it bearable
The work at the chair only gets you so far. The grow-out lives between appointments. Four habits matter at home.
Conditioning. A grow-out moves through twelve to eighteen months of variable porosity along the lengths. The ends, even if they have not been freshly lifted, carry the cumulative weight of whatever was done to them in the years before. Deep conditioning, once a week, will hold them together until the trim takes them off.
Tone. If the previously coloured lengths are warm, a cool-pigmented shampoo, used once a week, will keep them from drifting further into brass. Used daily, the same shampoo will pull the warmth out and leave the hair flat. The rule we give at the chair is one wash in five, no more.
Trim. The ends carry the oldest colour on the head; they were tinted longest, lifted most, and they will be the last to leave. A trim every eight to ten weeks, taking off a centimetre at a time, brings the colour line closer to the scalp without committing to a major cut until you are ready.
Patience with the box at the chemist. We mean this kindly. A guest three months into a grow-out, on a wet Wednesday in November, looking at her parting in unflattering kitchen light, will at some point think about a home colour. We ask, gently, that she ring us first. A box on a grow-out is the single most expensive shortcut we know.
When the line drops
There is a point in most grow-outs, usually around two thirds through, when a guest sits down and asks for the line to come off.
Sometimes we cut above it. Sometimes we cut through it, with a soft shadow root left in to ease the transition. Sometimes she decides she is going to keep growing and live with the line for another six months. All three are valid. The chair is not in a hurry.
What we will say, after twenty-eight years of doing this, is that the guests who arrive at the line slowly, having softened it with three or four appointments along the way, are the ones who keep their hair. The ones who cut it off in a single appointment, having tried to grow it out on their own with no contact with the chair, are the ones who come back six months later with something else to fix.
The chair you only leave when the work is right.
A note on the consultation
Every grow-out begins at the consultation. We ask three questions. When was the last time a colour was put on. What was it. Where are you trying to get to. Two of the three are answered by looking at the hair. The third is the only one that matters.
The destination is rarely a shade card. It is a description, often given quietly at a chair in our south-side salon, of the colour a guest had at twenty-five, or her mother's silver, or simply less upkeep and more of her own hair.
We work back from that. The plan becomes a sequence of appointments with dates, and a clear sense of what each one is for.
If you would like to plan the grow-out properly, with one colourist seeing you through to the finish, an appointment is the place we begin. We sit on Paisley Road West, by appointment, one guest at a time.