- Home
- Services
- Keratin Straightening Treatments
- Keratin Smoothing Treatment

Keratin Smoothing Treatment
A Keratin Smoothing Treatment is a salon service designed to reduce frizz, soften the hair, and make daily styling noticeably easier. It works by smoothing the outer cuticle so your hair dries with a sleeker finish, improved shine, and more predictable movement, especially in damp or humid weather.
More information
What a Keratin Smoothing Treatment delivers for frizzy, puffy hair
Keratin smoothing focuses on manageability rather than a drastic style change. Your result is intended to look polished and natural, with less effort at home.
- Smoother cuticle for reduced frizz and less “puff” through the lengths
- Faster blow-drying and easier brushing, especially on thick or porous hair
- A more consistent finish in humidity, so the hair holds its shape better
- Added shine and a softer feel without relying on heavy styling products
- Better day-to-day control for hair that tangles easily or feels rough at the ends
Who keratin smoothing suits best
Keratin smoothing is often chosen by clients who like their current cut and colour, but want the finish to look calmer and more refined between appointments. It is particularly useful if your hair expands in rain, feels fluffy after drying, or takes a long time to smooth with heat tools. If your hair is very fragile or heavily over-processed, a consultation can confirm whether smoothing or a conditioning-led plan is the better option.
How the Keratin Smoothing Treatment appointment runs (from 120 mins)
Your appointment starts with a consultation to confirm your hair goals, current condition, and how smooth you want the end result to look. The service then moves through clear stages: cleansing the hair, applying the smoothing formula in sections, allowing it to process, then blow-drying and sealing the treatment with heat for longevity. The appointment finishes with a styled result so you can see how the hair sits and moves.
Aftercare that keeps the smoothing result looking polished
Aftercare matters for how long the smoothing effect stays noticeable. You will be guided on when to wash your hair after the appointment, what to avoid in the first couple of days, and which cleansing and conditioning products support a smooth cuticle. Many clients also find that regular masks and gentle heat protection help maintain softness and shine between smoothing appointments.
Client Reviews
Based on 10 reviews
- D
Daniela Turner
Thank you so much Carlos for Keratin Treatment. You really are the best I’ve had so far . I will definitely be back when needed again. I can’t thank you enough for what a great treatment you really did do with my Hair . 🙏
- D
Debi Ani
Carlos did an excellent Kératine treatment in a fraction of the time it usually takes!
- C
Claudia Simon
I have my Keratin straightener done by Amy. It seals my hair and makes it look so healthy and shiny. I love it. Amy is always so lovely and helpful with all my questions. I highly recommend and wouldn't go anywhere else.
Show all reviews
- s
sophie cowan
I love coming into Simon Warwick! Best straightener I have ever had.
- J
Jen Goss
Highly recommend Amy Cohen for a Keratin - best Keratin I've ever had! Wonderful salon, everyone is so friendly and helpful.
- N
Nicky Green
Amy does my keratin which I couldn’t go on holiday without having!!! The process is quick and easy and makes the world of difference
- M
Mariam S
The absolute best ever hair salon in London! I never go anywhere else. I have been coming here for the last 6 years at least- possibly longer. Everyone is so kind, so patient, so thorough and so talented. Amy is the only one I let touch my hair. I have very thick very frizzy hair which can be an handful. She always knows how to manage it and always gives me the exact look I want/need. She also keratins my hair (which is utter magic!!!). Shes an angel and so so good!!! I would not ever go anywhere else. For colour (roots and balayage) it’s Carlos! I mainly want the natural look and he does this so perfectly!!! I have had my hair braided by indu! And curled by Simon! I’ve seen him do the most fantastic extensions too so there’s nothing these guys can’t deliver. You will not be disappointed and no one you can trust better with your hair!
- L
Lucy Coz
Came in today and Celeste did my keratin treatment and cut. I honestly couldn’t be happier with my hair! It feels so much better and I already feel way more confident with it. Celeste was lovely and did such a good job. The salon has such a nice atmosphere and all the staff are really friendly and treat everyone so well. Would definitely recommend Celeste if you’re wanting to feel more confident with your hair! 🤍
- C
Casey
Carlos is truly an amazing Colourist, he has really brought my Hair Colour back to life with very subtle sun kissed highlights, and then I had The Keratin Hair Treatment with him after that he promised and would make my hair and life easier for my Frizzy hair and lock in shine . What Carlos had done has certainly worked and I am forever grateful and thankful to have had Carlos doing my Hair Colour at this Salon. He is great, Thankyou Carlos again , you were great . See you again !
- P
Payal Khamar
Loved getting my keratin treatment with Carlos!
Frequently Asked Questions
How long does a Keratin Smoothing Treatment last?
Will keratin smoothing make my hair completely straight?
Can I have keratin smoothing on coloured or highlighted hair?
Do I need to do anything before my keratin smoothing appointment?
What aftercare should I follow in the first 48 hours?
Related Blog Posts

Brazilian Keratin Treatment in Maida Vale
Smooth and tame frizz with a professional Brazilian keratin treatment at Simon Warwick Salons in Maida Vale, London. Long-lasting shine and easy styling for all hair types.
Read more
Keratin treatment aftercare: how to make your results last
Keratin treatment aftercare made simple: when to first wash, the best shampoo to use, and how to keep hair smooth for longer, from Simon Warwick in Maida Vale.
Read more