Reviewed November 11, 2026

How Often Should You Trim? The Schedule by Hair Type

Split ends cannot be repaired, only cut, because the hair shaft is dead tissue and a split fibre does not rejoin. The trim schedule follows the damage, not the calendar: bleached, heat-styled, or chemically treated hair needs a trim every 6 to 8 weeks, because the ends split faster than they grow, while healthy, unprocessed hair can go 10 to 12 weeks. The test is not the date, it is the ends: if they look transparent, feel rough, or tangle at the bottom, they are split, and waiting longer only lets the split travel up the shaft, where it costs more length to fix.

Every haircut advice column gives a number: every six weeks, every eight weeks, every three months. The numbers disagree because the question is wrong. The trim schedule does not depend on the calendar. It depends on what has happened to the ends since the last cut, and the ends of bleached hair and virgin hair live in different worlds.

A split end is a fibre that has come apart, usually from heat, bleach, or mechanical damage, and it does not heal. Conditioner can glue it temporarily, and a trim is the only permanent fix. The longer you wait, the further the split travels up the shaft, and the more length the eventual cut has to take. Waiting to save length is how you lose it.

The schedule, by damage level

Bleached or heavily heat-styled hair needs a trim every 6 to 8 weeks. Bleach lifts the cuticle and weakens the cortex, and a flat iron at 185 degrees finishes the job, so the ends split faster than the hair grows. Waiting twelve weeks on bleached hair means the split has travelled an inch up the shaft, and the trim that would have taken half an inch now takes two. The short interval is not a salon upsell. It is the math of damage.

Healthy, unprocessed hair can go 10 to 12 weeks, and sometimes longer, because the cuticle is intact and the ends split slowly. Curly hair can go longer still, because the curl hides the ends and the split is less visible, but it still needs a trim, because the split still travels. The schedule is a range, not a rule, and the ends tell you where in the range you sit.

How to read your own ends

Hold a small section of hair up to the light and look at the last inch. Healthy ends look solid and opaque, with the same thickness as the rest of the shaft. Split ends look transparent, feathered, or forked, and they feel rough when you run your fingers down the strand. If the ends tangle at the bottom while the rest of the hair stays smooth, the tangle is the split catching on itself, and it is time.

The fairy knot test works too. A tiny knot at the very end of a single strand, common in curly and coily hair, is a split that has curled back on itself, and it will not come out without cutting. If you find more than a few in a section, the trim is overdue, and the dusting, a quarter-inch trim of just the ends, is the fix that costs the least length.

What a dusting is, and when it is enough

A dusting is a trim of a quarter inch or less, just enough to take the split ends off without changing the length. It is the right cut when the hair is mostly healthy and only the very ends are split, and it is the cut to ask for when you are growing your hair out. A stylist who insists on taking two inches when you asked for a dusting is not reading the ends, and you should say so before the scissors open.

A dusting is not enough when the damage runs further up. If the ends are split an inch up the shaft, or the hair is breaking mid-length, the cut has to go to healthy hair, and no amount of dusting will fix it. The honest conversation is to ask the stylist to show you where the damage ends, and cut to there. The length you lose is the length that was already gone.

Frequently asked questions

How often should I trim my hair?

Every 6 to 8 weeks for bleached, heat-styled, or chemically treated hair, and every 10 to 12 weeks for healthy, unprocessed hair. The schedule follows the damage, not the calendar, and the ends tell you where in the range you sit.

Can split ends be repaired?

No. Hair is dead tissue, and a split fibre does not rejoin. Conditioner can glue a split temporarily, but the only permanent fix is cutting it off. Waiting longer lets the split travel up the shaft, where it costs more length to fix.

What is a dusting trim?

A trim of a quarter inch or less, just enough to take split ends off without changing the length. It is the right cut when the hair is mostly healthy and only the very ends are split, and it is what to ask for when growing hair out.

How do I know if my ends are split?

Hold a section up to the light and look at the last inch. Split ends look transparent, feathered, or forked, and feel rough. If the ends tangle at the bottom while the rest stays smooth, the tangle is the split catching on itself, and it is time for a trim.