One of the most common questions we get at Fluff is also one of the simplest: how often should you cut your hair? And the honest answer is it depends — on your length, your texture, whether you colour, and what you’re trying to grow into or maintain. The “every six to eight weeks” rule gets repeated everywhere, but it was invented for short precision cuts and it doesn’t apply evenly to everyone.

This guide is the answer we give clients in the chair. It covers how fast hair actually grows, what split ends do if you leave them, how cut frequency changes by length and style, and how colour, heat, and extensions shift the timeline. By the end you’ll have a number that fits your hair, not a rule that was written for someone else’s.

How fast hair actually grows — and why splits matter

Average scalp growth is roughly half an inch per month, or about six inches a year. Some people grow faster, some slower, and it slows a little with age and with stress. That growth is the ceiling on how fast you can add length. Everything else — breakage, splits, fraying — subtracts from it.

When a split end forms at the tip, it doesn’t stay at the tip. Over a few weeks it works up the shaft, and once it’s traveled a couple of inches the hair above it is compromised too. Cutting a split off at the tip costs you an eighth of an inch. Letting it travel costs you two inches of healthy hair by the time you finally deal with it. That’s the math behind every haircut schedule — trim small and often, or cut big and lose length.

Short hair: every 4 to 6 weeks

A pixie, a short bob with a defined line, a sharp undercut, a shaped crop — any cut where the silhouette is doing the work needs to be maintained every four to six weeks. The shape degrades fast at the nape and around the ears. What looked intentional at week two looks grown-out at week six, and looks like you’re avoiding your stylist at week eight.

If you love your short cut, build the appointment into your calendar on the same rhythm as a good dentist visit or a standing nail appointment. You can stretch a week if you need to, but going past six weeks usually means the next appointment has to do corrective work instead of just maintenance.

Medium-length hair: every 8 to 12 weeks

Shoulder-length cuts, lobs, midi-length layered cuts — these sit in the most flexible window. The line is less critical than on a short cut, but layers still need to be reshaped so the weight sits where it’s supposed to. Eight to twelve weeks is the right window for most people at this length.

If you colour, you’re probably already in the salon every eight to ten weeks anyway — schedule the cut with the colour and you’ll never have to think about it. If you don’t colour, set a reminder at ten weeks and book when it pings.

Long hair: every 10 to 14 weeks

Past shoulder-length, the math changes. Longer hair has been through more — more wash cycles, more heat, more sun, more seasons. The ends are the oldest part of your head and the most worn. But long hair also forgives a longer gap between cuts, because the overall shape isn’t as dependent on a precise line.

Ten to fourteen weeks is the right cadence for most long hair, with the clock shortening toward ten if you colour, heat-style often, or live somewhere dry (hello, Denver). A half-inch dusting every three months keeps the ends blunt and healthy without sacrificing the length you’ve worked for. If you’re actively trying to grow longer, the instinct is to skip cuts entirely — don’t. Small trims on schedule grow hair faster than no trims plus breakage.

How colour, heat, and texture shift the timeline

Length is the starting point. These are the modifiers that pull the number in either direction.

Colour, especially blonde. Lightening is oxidative — it changes the hair’s structure and makes the ends more fragile. Blondes tend to need cuts on the shorter end of whatever window their length suggests. If you’re medium-length and lightened, think eight to ten weeks, not twelve. If you’re long and lightened, think ten, not fourteen.

Heat styling every day. Daily hot tools at 400 degrees eat through hair the way Denver sun eats through a dashboard. If you blow-dry and iron every morning, shorten the cut window and invest in a real heat protectant. Schedule-wise, the cost of daily heat is roughly a week or two off your usual cadence.

Curly and coily texture. Curls hide splits until they don’t. A dry cut every ten to sixteen weeks — not a wet cut — lets you shape curl-by-curl without removing more than needed. Curly clients often come in less often than straight-haired clients and that can absolutely work, as long as the cut is dry and the stylist knows how to work with the pattern.

Fine hair. Fine hair shows breakage faster because there’s less diameter to hide damage. If your hair is fine and you’re coloured and heat-styling, you’re effectively in the shorter window no matter what length you are. Don’t wait for your ends to look bad — by then the damage has already traveled.

Extensions. Extensions don’t change how fast your natural hair grows, but they do change your cut strategy. Your extensions get trimmed and blended at every move-up or reinstall; the natural hair under them still needs the same length-based cadence as if they weren’t there. We cover the full care picture in our extension care at home guide.

If you’re trying to grow it out

This is the moment where most people skip cuts entirely, and it’s almost always the wrong call. If you want to keep the length you’re adding each month, you have to give up a little of it to keep the rest healthy. The real formula is: grow half an inch a month, lose an eighth of an inch to a dusting every three months, net gain is still about five inches a year. Skip the dusting and the loss from breakage is often bigger than the gain.

Tell your stylist you’re growing it out. A good one will take the absolute minimum — a quarter-inch or less — and focus on trimming only the splits rather than re-cutting the full shape. Book every three to four months during a grow-out phase, and use the in-between time to be aggressive about heat protection, masks, and gentle styling.

How to tell it’s time — without a calendar

Calendars are a backstop; your hair usually tells you first. A few signals we listen for when clients are in the chair:

• The ends feel noticeably thinner than the mid-lengths when you run your fingers down the hair.
• You see more single-strand knots at the ends, or hair catches on your brush where it didn’t used to.
• The shape has lost its line — a bob that used to hit a specific point now reads shapeless.
• Styles aren’t holding the way they used to. Splits don’t curl the same as healthy ends.
• You can see visible white dots at the tips under a bright light — those are fully split ends, and they’re already traveling.

If two or more of those are true, you’re past due regardless of what the calendar says. Book the trim.