"Every six weeks." You have heard it, I have heard it, everyone who has ever sat in a salon chair has heard it. It is repeated so often that most people treat it as a law of nature — and quietly feel guilty when life gets busy and week ten arrives before the next appointment. So let me say something that may surprise you, coming from a man who has spent more than three decades cutting hair: there is no single right answer. The honest schedule depends on your hair, your cut, and your life — and a well-made cut should buy you more time, not less.
What a Haircut Actually Maintains
Hair on the head grows roughly half an inch a month for most people, a little faster or slower from person to person. A haircut does not change that. What a haircut maintains is the shape — the balance of weight, the line around the face, the way the hair sits and moves. It also maintains the condition of the ends, because ends that have worn thin or split will keep splitting if they are never trimmed.
So the real question is not "how many weeks has it been?" It is: has the shape stopped working, or have the ends stopped cooperating? Those are things you can see and feel, and they arrive on different timelines for different heads of hair.
A Realistic Guide by Cut and Length
With the understanding that your own hair writes the final rule, here is roughly how I think about it at the salon:
- Short cuts and cropped styles show growth fastest — the shape is the style, so most short cuts want attention every four to eight weeks.
- Bobs and strong lines at the jaw or shoulder hold their character for six to ten weeks, depending on how crisp you like the line.
- Mid-length and long layered hair is the most forgiving: eight to twelve weeks is common, and longer is possible when the shape is well balanced.
- Long, one-length hair mostly needs the ends kept healthy — a trim every ten to twelve weeks or so protects the length you are keeping.
- Curly hair often goes longest of all. A curly shape cut properly — dry, curl by curl — grows out as a slightly softer version of itself rather than collapsing.
Color changes the math a little: if you wear highlights or a precise gloss line, the cut and the color often like to be refreshed together. And if you are growing your hair out, you still want an occasional shaping — but that is a subject I will save for its own article.
Why the Cut Itself Sets the Schedule
Here is the part I care most about, because it is the heart of how I work. The reason so many people feel chained to the six-week calendar is that many cuts are only in balance on the day they are made. Cut on wet, stretched hair, finished with a professional blow dry, the shape holds for a few weeks — then the weight shifts, the style collapses, and back you go.
A dry cut ages differently. Because the shape is built on your hair as it actually lives — its real texture, its real fall, its real behavior on an ordinary morning — it stays in proportion as it grows. The line softens; it does not break. Since Olivier and I opened Sacha & Olivier in Flatiron in 1993, this has been one of the quiet pleasures of the work: clients discovering that a cut can still look intentional in week ten, not just in week one. In a city where nobody has time to spare — where a salon visit competes with work, family, and everything else New York asks of you — a cut that lasts is not a small luxury. It is the whole point of doing the job well.
Signs It Is Time, Whatever the Calendar Says
Forget counting weeks. Watch for these instead:
- Your hair takes noticeably longer to style than it used to, or refuses to fall where it always fell.
- The shape has gone bottom-heavy, flat at the crown, or wide where it used to be soft.
- The ends feel dry and rough between your fingers, or tangle more than usual.
- You have started reaching for the ponytail every day — not by choice, but by surrender.
And one more, the happiest sign of all: you simply feel ready. A good haircut is maintenance, yes — but it is also one of the few small renewals a person can schedule. Whether you are a six-week regular or someone I see three times a year, the goal in my chair is the same: a shape honest enough about your hair that it serves you every single day in between.