Professional UK stockist
Professional hair smoothing treatments.
The same products used in UK salons. QIQI Hair Controller and Nanokeratin System — available to buy online for at-home or professional use. Free UK delivery over £80.
Two professional ranges
QIQI and Nanokeratin System.
QIQI
The at-home keratin treatment
Three cysteine-based formulas matched to thick/coarse, wavy/curly, and thin/delicate hair. Formaldehyde-free. Designed for professional results that can be applied safely at home. Results last up to 5 months. Approx. £38 per treatment.
Explore QIQI →Nanokeratin System
The professional salon standard
Six specialised smoothing treatments formulated for specific hair types — afro, natural, colour-treated, blonde, and more. Enzyme-based, formaldehyde-free, aldehyde-free. Used by professional hairdressers across the UK. Results last 12–16 weeks.
Explore Nanokeratin →Shop treatments
Professional smoothing treatments.

· £115
Hair Controller — Thick & Coarse
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· £115
Hair Controller — Wavy & Curly
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· £115
Hair Controller — Thin & Delicate
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Nanokeratin System · £220
Refortify Smoother — Afro & Textured Hair
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Nanokeratin System · £220
Revive Smoother — Natural Hair
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Nanokeratin System · £220
Refine Smoother — Colour-Treated Hair
View product →The process
How a hair smoothing treatment works.
01
Choose your formula
Select the treatment matched to your hair type. The chemistry is calibrated differently for thick/coarse, wavy/curly, and fine or colour-treated hair.
02
Apply to dry hair
Shampoo twice, dry fully, then apply the treatment section by section from root to tip. The product enters the hair shaft and begins restructuring.
03
Activate with heat
Process under heat for 30–90 minutes. Blow dry, then flat-iron at 230°C in thin sections. Heat seals the treatment and locks the new structure in permanently.
04
Leave and maintain
Wait 72 hours before washing. Use sulphate-free shampoo from the first wash to protect the treatment and maintain results for the full 4–5 months.
Questions
Hair smoothing treatment FAQ
What is a hair smoothing treatment?
A hair smoothing treatment is a professional salon service that uses heat-activated chemistry to restructure the hair from the inside out. The treatment reduces or eliminates frizz, curl, and volume — delivering smooth, manageable hair that resists humidity. Results last 3–5 months depending on the product and aftercare routine.
What is the best hair smoothing treatment in the UK?
QIQI Hair Controller and Nanokeratin System are two of the most widely used professional smoothing treatments in UK salons. QIQI is a cysteine-based treatment particularly suited to at-home use — it is formaldehyde-free, available in three formulas matched to different hair types, and delivers results lasting up to 5 months. Nanokeratin System is used heavily in professional salon environments and offers specialised formulas for afro, colour-treated, blonde, and natural hair.
Can I do a professional hair smoothing treatment at home?
Yes. QIQI Hair Controller is designed to be applied at home. It uses the same formula as salon treatments but is formulated and packaged for safe at-home use. You need a hair dryer, a flat iron (230°C), and 2–3 hours. Nanokeratin System products are aimed more at professional salon use.
How long does a hair smoothing treatment last?
QIQI Hair Controller lasts up to 5 months. Nanokeratin System treatments last 12–16 weeks (3–4 months). In both cases, longevity is heavily influenced by your shampoo — sulphates strip smoothing treatments rapidly. Using a sulphate-free shampoo from your first wash after treatment is the most important factor in how long results last.
What is the difference between QIQI and Nanokeratin?
QIQI Hair Controller is a cysteine-based smoothing treatment available in three formulas for different hair types — thick/coarse, wavy/curly, and thin/delicate. It is well suited for at-home use and results last up to 5 months. Nanokeratin System offers a wider range of specialised treatments — Refortify (afro/textured), Revive (natural hair), Refine (colour-treated), Replenish (blonde/bleached) and more. Nanokeratin is used heavily in professional UK salons.
Is a hair smoothing treatment safe for colour-treated hair?
Yes, with the right product. QIQI Thin & Delicate is formulated for fine and colour-treated hair. Nanokeratin Refine Smoother is specifically designed for colour-treated and chemically processed hair, and is safe on all colour services including toners and glosses. Do not apply any smoothing treatment within 4 weeks of bleaching.
How much does a hair smoothing treatment cost in the UK?
UK salons charge £180–£340 for a QIQI keratin treatment application. Buying the product directly from Nero Hair and applying at home costs £115 for 150g (3+ treatments) — approximately £38 per treatment. Nanokeratin System professional treatments start at £220 for 320ml. Free UK delivery on orders over £80.
UK stockist · free delivery over £80
Professional hair smoothing. Delivered.
QIQI and Nanokeratin System — the same products your hairdresser uses, available to buy online. Ships worldwide.