Permanent Hair Straightening salons and stylists across the UK
What to expect from a permanent hair straightening appointment
Permanent hair straightening (sometimes called Japanese straightening or thio-relaxer) restructures the hair bond for a lasting straight finish, only growing out as new hair comes through. The stylist runs a full strand test and patch test before booking, then dedicates four to six hours to the application: relaxer, smoothing, neutraliser and finish. Aftercare requires a sulphate-free routine and a gentle heat regime for the first fortnight. Most clients return only when the regrowth needs addressing. Compare permanent-hair-straightening specialists in the UK below, with strand-test policies and example work.
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Cities offering permanent hair straightening
- Permanent Hair Straightening in Peterborough (61 providers)
- Coming soon to London
- Coming soon to Manchester
- Coming soon to Birmingham
- Coming soon to Leeds
- Coming soon to Glasgow
- Coming soon to Edinburgh
- Coming soon to Liverpool
- Coming soon to Bristol
- Coming soon to Newcastle
- Coming soon to Cardiff
- Coming soon to Belfast
Frequently asked questions
How long does permanent hair straightening last?
It is permanent in the sense that treated hair stays straight until it grows out; new hair coming through retains the natural texture. Most clients book a touch-up of the regrowth every six to eight months rather than redoing the full length.
How is permanent straightening different from a keratin treatment?
Keratin coats the hair shaft and fades over three to four months. Permanent straightening (thio-relaxer or Japanese straightening) restructures the bond and is permanent on the treated hair. Permanent is the bigger commitment and bigger chemical service.
Do I need a strand test before permanent straightening?
Yes. Most salons run a strand test and patch test before booking the full service. The strand test confirms how the hair responds to the chemistry; the patch test rules out skin reactivity.
How much does permanent hair straightening cost?
A full permanent straightening typically runs two hundred to six hundred pounds in UK salons depending on hair length, type and brand of system used. Regrowth touch-ups are cheaper, often a hundred fifty to three hundred. Premium salons sit higher.
Can I go back to my natural texture after permanent straightening?
Only by growing out the treated length and cutting it off in stages. The chemistry cannot be reversed. Many clients trial a keratin treatment first as a non-permanent test of how they like straighter hair before committing.