Trimming the ends: how often it actually makes sense
The interval depends on the goal: every six to eight weeks to hold a short shape, every ten to twelve to keep a long length healthy, and every three or four months when the aim is to gain length.
gelisted editorial team · Updated 15 August 2026
The short version
- Hair grows about 1 to 1,5 centimetres a month.
- Trimming the ends does not speed growth at the root.
- A maintenance trim removes 1 to 2 centimetres.
- An unrepaired split travels up the shaft and forces a bigger cut later.
Cutting does not make hair grow. What it does is stop the damaged part forcing a much bigger cut six months later.
The real rate of growth
Hair grows between 1 and 1,5 centimetres a month, so 12 to 18 centimetres a year. That rate depends on genetics, age and nutritional status, and it does not change by trimming the ends: growth happens at the follicle, not at the tip. What does change is how much of that growth you keep, because hair that snaps mid shaft never reaches full length.
| Objective | Interval | Amount removed |
|---|---|---|
| Hold a short or pixie shape | 4 to 6 weeks | as needed |
| Hold a bob or mid length | 6 to 8 weeks | 1 to 2 cm |
| Keep long hair healthy | 10 to 12 weeks | 1 to 2 cm |
| Gain length | 3 to 4 months | 0,5 to 1 cm |
| Chemically processed hair | 8 to 10 weeks | 1 to 2 cm |
| Fringe | 3 to 4 weeks | as needed |
| Monthly growth | 1 to 1,5 cm |
What happens if you leave it
A split end does not repair itself: it travels upward. Hair that splits 1 centimetre from the tip can have the split at 4 centimetres six months later, and then 4 centimetres have to come off instead of 1. The paradox is that someone who never trims for a year loses more length than someone who removes a centimetre every three months.
Asking for it properly
In numbers, not adjectives. Just a little means different things to different people; 1 centimetre is a measurement. Say whether you will accept losing shape to gain condition or the other way round. And indicate where the hair should end by placing a hand against your body, with the hair dry, because wet hair stretches 2 to 4 centimetres and the cut lands higher than expected.
On curly hair, cutting dry shows the real spring of each curl and avoids surprises of several centimetres.
What actually protects the ends
A weekly mask, heat protection before styling and a dryer on medium rather than maximum. Avoiding elastics with metal parts. Sleeping with the hair braided. And spacing out chemical processes: 2 lifting services a year do less damage than 5. With that routine the interval between cuts can move from 8 to 12 weeks without the hair losing its look.
Frequently asked
+Does cutting the ends make hair grow?
No. Growth happens at the follicle. Cutting prevents length being lost to breakage.
+How often should I trim?
Every 6 to 8 weeks on mid length, every 10 to 12 on long hair and every 3 or 4 months to gain length.
+How fast does hair grow?
Between 1 and 1,5 centimetres a month, so 12 to 18 centimetres a year.
+What if I never trim?
Splits travel up the shaft and force the removal of more centimetres than would otherwise have been lost.
+Cut wet or dry?
Dry on curly hair, because it shows the real spring of each curl.
Sources
- 1Ministerio de Sanidad, Gobierno de España (August 2026)
- 2Instituto Nacional de Estadística, INE (August 2026)