Brazilian Keratin Treatment in London
Brazilian Keratin Treatment
Our heaviest smoothing service. Keratin is sealed into the cuticle with heat for sleek, glossy, frizz-free hair that lasts for weeks, even on thick, curly or unruly hair, without losing all your volume.
What it is
Sleek, frizz-free hair with long-lasting impact
A Brazilian Keratin Treatment is a smoothing service that delivers sleek, frizz-free results that last. Keratin is sealed into the hair cuticle with heat, leaving a glossy, soft finish that holds for weeks.
It is the top choice for thick, curly hair, or anyone who wants smoother locks with a healthy shine. You get the benefits of Brazilian hair straightening without flattening your hair, so it stays smooth but keeps body and movement.
Want something lighter? Our Keratin Blow Dry is a quicker, gentler option that reduces frizz while preserving your natural movement.
01
Keratin is what hair is made of
Heat, colour and daily wear strip it out, which is what leaves hair dry, porous and frizz-prone.
02
The treatment puts it back
Keratin fills the gaps in the cuticle and wraps each strand in a smooth, even surface.
03
Heat seals it in
A flat-iron locks the keratin into the cuticle, holding humidity out so the smoothness lasts for weeks.
Two smoothing services
Which one is right for you?
We offer two separate treatments. The difference is how much smoothing you want and how long you want it to last.
This page
Brazilian Keratin Treatment
Stronger smoothing, lasts weeks to months
- Deepest smoothing and frizz control
- Best for thick, curly or coarse hair
- Sleek, glossy, lasts the longest
- Keeps volume rather than going dead flat
Choose this if you want the biggest transformation and the longest-lasting result.
Lighter option
Keratin Blow Dry
Gentler, quicker, preserves movement
- Reduces frizz, tames texture
- Keeps your natural movement and bounce
- Faster appointment, lighter result
- Great for fine hair or a first try
Choose this if you mainly want frizz gone with minimal downtime.
See the Keratin Blow Dry.
Not sure which suits your hair?
Tell us about your hair and we’ll match the treatment to it, no guesswork.
Why people love it
What a Brazilian Keratin Treatment gives you
Frizz gone, properly
The strongest frizz control we offer. Smooth that holds up in humidity and rain.
Sleek, straighter hair
The benefits of Brazilian hair straightening, with much less daily effort.
Glossy, healthy shine
A soft, glassy finish that catches the light and looks expensive.
Lasts for weeks
Our longest-lasting smoothing result, so styling gets easier for months.
Keeps your volume
Smooths thick, curly hair without flattening it to lifeless and dead-straight.
Protects your colour
Sealing the cuticle slows fade, so your Sassoon colour stays brighter for longer.
In the chair
How the appointment works
1
Consultation
We assess your hair type, texture and history, and confirm the treatment is right for you.
2
Clarifying wash
A clarifying shampoo lifts product and buildup so the keratin can absorb evenly.
3
Keratin application
The solution is brushed through in fine sections, root to tip, and left to penetrate.
4
Blow-dry smooth
Hair is blow-dried to drive the keratin into the strand.
5
Seal with heat
Each section is pressed with a flat iron to seal the keratin into the cuticle and create the glossy finish.
6
Style and go
You leave with sleek, smooth, glossy hair, and a routine that’s far easier to manage.
The finish
See it move
The real test of a Brazilian Keratin Treatment is how the hair falls and catches the light afterwards. That’s the part words can’t do justice to.
Is it right for you?
Who it suits
Honest guidance, because the right treatment depends on your hair, not a one-size pitch.
A great fit if you have
- Thick, curly or coarse hair
- Frizzy, unruly or hard-to-manage hair
- A long daily battle with straighteners
- Hair that swells and frizzes in humidity
- Coloured hair that you want to keep glossy
Worth a chat first if
- You have very fine hair and don’t want to lose body
- You want a lighter result, in which case a Keratin Blow Dry may suit you better
- You’re planning colour or bleach soon after
- You’re pregnant or breastfeeding, we’ll talk you through the options
Pricing
Simple, consultation-led pricing
£110 – £220
Final price depends on your hair length and thickness, confirmed at your consultation before anything starts.
- Price set after we see your hair, no surprises
- Every appointment with a senior Sassoon-trained stylist
- Aftercare guidance included
Thicker, longer and curlier hair takes more product and time, which is why the range exists. We’d rather quote you accurately in person than guess online.
Not sure whether the full treatment or a lighter Keratin Blow Dry is better value for your hair? We’ll tell you straight at the consultation.
Let’s match it to your hair
Every appointment is with Eva or Gabby, both Sassoon-trained. They’ll assess your hair and recommend the treatment that actually fits, before you commit.
Good to know
Common questions
How long does a Brazilian Keratin Treatment last?
It’s a long-lasting smoothing result that holds for weeks, and with good aftercare often months. It softens out gradually and returns to your natural texture, so there’s no harsh regrowth line.
Does it work on thick, curly or Afro hair?
Yes. The Brazilian Keratin Treatment is our strongest smoothing service and is well suited to thick, curly and coarse hair. We assess your hair at the consultation and tailor the application to your texture.
Will my hair be dead straight?
It smooths and relaxes texture for a sleek, glossy result, but it’s designed to keep some volume and movement rather than flatten your hair completely. We’ll talk through the finish you want first.
How is it different from a Keratin Blow Dry?
The Brazilian Keratin Treatment is the heavier, longer-lasting service with the deepest smoothing. The Keratin Blow Dry is lighter and quicker, reducing frizz while keeping more of your natural movement. They’re two separate services.
Can I colour my hair too?
Yes, colour beforehand or on the same plan, just not straight after. Sealing the cuticle actually helps protect and prolong your colour.
How long is the appointment?
It varies with hair length and thickness. We confirm timing and price at your consultation so there are no surprises on the day.
How much does it cost?
From £110 to £220, depending on your hair length and thickness. The exact price is confirmed in person before we start.
Ready when you are
Book your Brazilian Keratin Treatment
Sleek, glossy, frizz-free hair that lasts, done by a senior stylist who’ll match the treatment to your hair. Eva or Gabby, every time.
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