How Often Should You Get a Keratin Treatment? Stylist Guide
Most keratin treatments should be repeated every 3 to 5 months, or roughly 2 to 4 times per year. The exact timing depends on the treatment, your hair type, and how well you maintain it between appointments.
The general rule: wait at least 12 weeks between treatments. Going more often doesn’t give your hair enough time to recover and can lead to over-processing, dryness, and long-term damage.
At Numi Hair Salon in Scarsdale, our stylists build a personalized keratin treatment schedule based on your hair’s type, condition, and the specific smoothing service you choose. We’d rather you come in less often with healthy hair than more often with damaged hair.
How Often by Treatment Type
Different treatments last different lengths of time, which directly affects how often you need to rebook:
| Treatment | How Long It Lasts | Recommended Frequency |
|---|---|---|
| Brazilian Blowout | 3–4 months | Every 3–4 months (3–4×/year) |
| Lasio Keratin | 3–5 months | Every 4–5 months (2–3×/year) |
| Keratin Complex | 3–5 months | Every 4–5 months (2–3×/year) |
| Magic Sleek | 3–6 months | Every 4–6 months (2–3×/year) |
| Keratin Express | 4–6 weeks | Every 6–8 weeks (6–8×/year) |
The Keratin Express Treatment is the exception. It’s a lighter formula that fades faster, so more frequent touch-ups are safe and expected. For every other option in our keratin treatment menu, 12 weeks minimum between appointments is the guideline.
How Often by Hair Type
Your hair type also affects how quickly the treatment fades, and how often you’ll need to come back:
Thick, coarse hair: Holds the treatment the longest. You may only need 2 to 3 treatments per year with a traditional keratin or Lasio Keratin.
Wavy hair: Great retention. Every 3 to 4 months is typical, especially with a Brazilian Blowout.
Curly hair (Type 3A–3C): Fades faster due to higher porosity. Expect to rebook every 3 months for a Brazilian Blowout, or every 4 to 5 months for a stronger treatment. Read our full guide on keratin treatment for curly hair.
Tight curls and coils (Type 4): May need treatment every 3 months as tight curls revert sooner. A Lasio Keratin or Magic Sleek will give you the longest stretch between appointments.
Fine hair: Fades faster because thinner strands lose the keratin coating more easily with washing. Every 3 months is typical, but aftercare matters more for fine hair than any other type.
Color-treated hair: Duration is similar to your base hair type, but use extra caution with frequency. Adding Olaplex or K18 between treatments helps keep color-treated hair strong enough for repeat sessions.
Signs It’s Time for a Touch-Up
Don’t just follow a calendar. Listen to your hair. Here are the signals that your treatment is wearing off:
Usually the first sign. You’ll notice it around the hairline first, then throughout.
If your morning routine is creeping back up to pre-treatment levels, the keratin is fading.
If you step outside on a humid day and your hair immediately reacts, the protective layer is gone.
When the coating wears off, the cuticle opens back up. Hair feels coarser or less silky.
If you’re heat styling more often to recreate the look the treatment gave you naturally, it’s time to rebook.
When you notice these signs, book your refresh. Don’t wait until the treatment is completely gone. Touching up a treatment that still has some life in it is easier, faster, and more cost-effective than starting from scratch.
Ready for a personalized keratin treatment schedule?
What Happens If You Get Keratin Treatments Too Often
This is important. More isn’t better when it comes to keratin. Over-treating can cause:
Protein overload. Hair needs a balance of protein and moisture. Too much keratin without enough conditioning in between can make hair stiff, brittle, and prone to snapping.
Cumulative heat damage. Every keratin treatment involves a flat iron at 380–450°F. Repeating this too frequently without recovery time weakens the hair shaft.
Loss of natural texture. Getting keratin treatments back-to-back for years without breaks can gradually alter your curl pattern, especially relevant for curly-haired clients.
Thinning and breakage. The combined effect of repeated chemicals and heat can thin hair over time, especially if it’s already fine or damaged.
The fix: Stick to the recommended frequency for your treatment type (see table above), and add bond-building treatments like Olaplex ($25+) or K18 ($20) between appointments to keep your hair healthy. For more on this topic, read our guide on whether a Brazilian Blowout can damage your hair.
How to Extend Time Between Treatments
The longer your treatment lasts, the fewer appointments you need per year, saving you money and giving your hair more recovery time. Here’s how to stretch your results:
Use sulfate-free shampoo and conditioner. The #1 way to extend any keratin treatment. Sulfates strip the coating aggressively. We carry Kerastase, Olaplex, and Oribe in-salon (all sulfate-free and keratin-safe).
Wash every 2 to 3 days, not daily. Every wash removes a thin layer of the treatment. Dry shampoo between washes keeps hair fresh without stripping.
Avoid chlorine and salt water. Both accelerate fading. If you swim, wet your hair with clean water first and apply leave-in conditioner as a barrier.
Minimize heat styling. The treatment already does the heavy lifting; let it. Less flat ironing and blow-drying means the keratin coating stays intact longer.
Use a silk or satin pillowcase. Cotton creates friction that roughs up the sealed cuticle. Silk preserves the smoothness.
Add deep conditioning treatments monthly. Keeping your hair moisturized helps the keratin coating stay balanced and prevents the brittleness that comes from protein overload.
Don’t skip Olaplex or K18 between appointments. These bond-building treatments repair and strengthen your hair, keeping it healthy enough to hold the keratin treatment longer.
Should You Take Breaks Between Keratin Treatments?
Yes. We recommend it.
After 3 to 4 consecutive keratin treatments (roughly a year), consider giving your hair a break for one cycle. That means skipping one treatment and going 5 to 6 months without keratin. During the break:
- Focus on deep conditioning and moisture treatments
- Use Olaplex or K18 to repair any accumulated damage
- Let your natural texture come back fully
- Assess your hair’s health before booking the next treatment
This isn’t a hard rule. Some clients with healthy, thick hair go years without breaks with no issues. But for fine, color-treated, or curly hair, periodic breaks help maintain long-term hair health. Your Numi stylist will monitor your hair’s condition at every appointment and let you know if a break would benefit you.
What a Typical Year of Keratin Treatments Looks Like
Here’s what an annual keratin treatment plan looks like for a typical client getting Brazilian Blowouts at Numi:
For clients using Lasio Keratin or Magic Sleek (which last longer), the schedule is 2 to 3 treatments per year at a lower annual cost.
Build your year-round keratin treatment plan with a Numi stylist.
Why Choose Numi Hair for Keratin Treatments
Our clients rate us as the best salon in Westchester, and trust us with their keratin treatments year-round.
National recognition for quality, service, and consistent results.
Our team earns top honors from Westchester Magazine year after year.
Brazilian Blowout, Lasio Keratin, Keratin Complex, Magic Sleek. We match the treatment to your hair.
Kerastase, Olaplex, and Oribe available in-salon so your results last as long as possible. Browse our professional products.
Your stylist builds a schedule based on your hair type, condition, and lifestyle, not a one-size-fits-all calendar.
Ready to Book?
Whether you’re due for a refresh or scheduling your first keratin treatment in Scarsdale, our team will create a personalized plan that keeps your hair healthy and smooth year-round.
Or call us directly at 914-574-6402
Keratin Treatment Frequency FAQ
How often should I get a Brazilian Blowout?
Every 3 to 4 months is the sweet spot for most clients. That gives you consistent results without over-processing. Some clients with thick hair stretch it to 5 months. For timing details by hair type, read our guide on how long a Brazilian Blowout lasts.
Can I get a keratin treatment every 2 months?
We don’t recommend it for full keratin treatments. That’s too frequent and can lead to protein overload and damage. The exception is the Keratin Express Treatment, which uses a lighter formula and can safely be repeated every 6 to 8 weeks.
How do I know which keratin treatment schedule is right for me?
Your stylist at Numi will assess your hair’s type, condition, porosity, and treatment history to recommend the right frequency. There’s no one-size-fits-all answer; it depends on your specific hair. Book a consultation and we’ll create a plan.
Is it bad to get keratin treatments for years?
Not necessarily, as long as you space them properly, use professional aftercare products, and add bond-building treatments like Olaplex between appointments. We do recommend periodic breaks (skipping one cycle after every 3 to 4 treatments) for fine or color-treated hair.
How often should I get a keratin treatment on curly hair?
It depends on the treatment. A Brazilian Blowout on curly hair lasts 2 to 3 months, so every 3 months is typical. A Lasio Keratin or Magic Sleek lasts longer on curly hair (3 to 6 months), so you can go 4 to 5 months between appointments.
What should I do between keratin treatments?
Use sulfate-free products like the Kerastase, Olaplex, and Oribe lines we carry in-salon. Wash every 2 to 3 days. Minimize heat styling. Add an Olaplex or K18 treatment mid-cycle to keep your hair strong. And schedule your refresh before the treatment fades completely.
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