September is the best time of year to take your hair in hand, for one simple reason: it is the only month when all five levers are available at once. Your scalp is coming out of an unusual summer, your ends are asking for the scissors, your routine has drifted, daily styling starts up again, and autumn arrives with constraints of its own. This plan tackles them one by one, over four weeks.
One thing first: if your lengths are genuinely damaged by sun and salt, start with the post-summer repair protocol, which deals with the fibre. The plan below handles everything else.
Project 1: the scalp
After summer we always think about the lengths, rarely the scalp. Yet it is the scalp that makes the hair of the months to come, and summer treated it badly in its own way: sunburn along the parting, sunscreen and salt residue, sweat, hard water in holiday rentals.
The typical September symptoms are itching, small flakes and roots that get greasy faster than before. Three habits are enough to put things right.
- Regular, gentle cleansing, with a one to two minute massage using your fingertips, never your nails.
- A long rinse, finished with cool water.
- A break from tight hairstyles that pull on the roots.
The /RESET Shampoo pairs a gentle cleansing base with toning actives for the scalp.
Project 2: the cut
If there is one hairdresser appointment not to miss all year, it is the September one. After summer, the ends carry all the damage: splits, dryness, faded colour.
Keeping them to hold on to length is a bad bet: an uncut split travels up the fibre, and dead ends break within the following weeks anyway. A cut of one to three centimetres cleans up the base and gives an instant new-hair effect, with more visual density and a clean fall.
It is also a good moment to rethink the shape: light layering brings movement back to fine hair, a blunt bob adds density. Use the appointment to ask your hairdresser for an assessment.
Project 3: the bathroom clear-out
September is the time to sort out your products.
- Throw out the stopgap bottles brought back from holiday and anything opened more than twelve months ago.
- Check the labels on what you keep: our guide to the INCI list lets you spot build-up-prone silicones and overly detergent bases in thirty seconds.
- Rebuild a coherent routine around the four essential steps, following the method set out in our 4-step hair routine.
To start again with a complete, coherent system, the Complete Collection: The 4 Essentials covers all four steps with formulas designed to work together.
Project 4: everyday styling
No more drying in the sun: September marks the return of the morning hairdryer, office updos and soon scarves. Three adjustments stop that return to routine undoing your efforts.
- Heat. Moderate temperature, hairdryer fifteen centimetres away, and a leave-in applied first: a few spritzes of /REVEAL Mist act as a shield while taming morning frizz.
- Hair ties. Swap thin elastics that cut into hair for silk scrunchies or clips, and vary the position of your ponytail so you are not always weakening the same spot.
- Brushing. Gentle detangling in the evening, head tipped forward, spreads sebum down the lengths and sets you up for easy styling the next day.
Project 5: getting ahead of autumn
Autumn arrives with two well-known constraints, and both are prepared for in September.
Seasonal shedding. Every year between September and November, the renewal of the hair cycle intensifies and you temporarily lose more hair. It is a natural phenomenon, easier to get through with a healthy scalp. The markers for telling normal from concerning are in our article on seasonal hair shedding.
Drier air, outdoors and indoors as the heating comes back on, gradually dehydrates the lengths. Keep the weekly mask going all autumn, including when your hair seems to be doing better: it is precisely because the routine is holding that it is doing better.
The September hair reset: the essentials
- The scalp comes before the lengths: it is what makes what comes next.
- The cut is the action with the best time-to-result ratio.
- Sorting through your products beats buying one more.
- October shedding is prepared for in September, it is not fought.
- The weekly mask carries on all autumn, despite the impression things are better.
Frequently asked questions about the September hair reset
Where do I start if I only have time for one thing?
Trimming the ends. It stops splits from spreading, immediately restores visual density and lets the care that follows work on a healthy base.
Is it normal to lose more hair in September?
Yes: autumn seasonal shedding is linked to the hair cycle, often amplified by summer sun exposure. It lasts four to eight weeks and corrects itself.
Should I change shampoo every season?
Not necessarily: a gentle, well-formulated shampoo works all year round. What changes with the seasons is how often you wash and how intensive your additional care needs to be.
How long does the full reset take?
Four weeks: scalp and cut in the first, settling the routine over the next two, consolidation in the last. Allow four to six weeks more if the lengths are very damaged.
Does hard water play a part?
Yes: very hard water deposits minerals that dull and stiffen the fibre, an effect often noticed after a holiday in another region. A final cool-water rinse and a smoothing leave-in reduce the effects.
Do I need a course of food supplements?
Not essential if your diet is balanced. Nothing replaces the fundamentals: a healthy scalp, a regular routine and a protected fibre. If shedding is heavy or prolonged, the person to talk to is a doctor, not a supplement.
Article written by the KERA NEXT editorial team. Individual results: the outcome may vary depending on the nature and condition of your hair.