Zero formaldehyde. Zero compromise.
Formaldehyde-free keratin treatment.
Professional smoothing treatments that deliver salon results without formaldehyde, aldehydes, or toxic fumes. Two trusted brands — QIQI Hair Controller and Nanokeratin System. Safe for home and salon use.
Why it matters
The problem with traditional keratin treatments.
Many keratin treatments on the market contain formaldehyde or methylene glycol — a compound that releases formaldehyde gas when heated during application. Formaldehyde is classified as a known carcinogen and is a serious respiratory irritant. It is the reason salon keratin treatments often cause burning eyes and throat irritation.
Some products labelled "formaldehyde-free" still contain aldehyde derivatives that release formaldehyde at high temperatures. Both QIQI Hair Controller and Nanokeratin System are verified free of formaldehyde and all aldehyde derivatives.
You do not need to compromise your health for smooth, frizz-free hair. Modern formulations deliver equal or better results without any of the risk.
Formaldehyde
Zero
Aldehydes
Zero
Toxic fumes
None
Safe for home use
Yes
Option 1 — Permanent smoothing
QIQI Hair Controller.
Cysteine-based permanent straightening and smoothing. Three formulas for different hair types. Results last up to 5 months. Designed for both salon and home use — no commercial ventilation required.
From £119 · 150g
Hair Controller — Thick & Coarse
Formaldehyde-free permanent smoothing treatment for thick, coarse, and afro-textured hair. Softens disulfide bonds under heat for lasting frizz control — from defined curls to fully straight. QIQI Hair Controller results last up to 5 months.
Shop now →
From £119 · 150g
Hair Controller — Wavy & Curly
Permanently reduces frizz and enhances natural pattern definition — or delivers a smooth, controlled finish. Designed specifically for wavy and curly hair. Formaldehyde-free. Lasts up to 5 months.
Shop now →
From £119 · 150g
Hair Controller — Thin & Delicate
Formaldehyde-free permanent smoothing for fine, colour-treated, or delicate hair. Eliminates frizz and reduces volume without over-processing. QIQI Hair Controller safe for bleached and highlighted hair. Results last up to 5 months.
Shop now →Option 2 — Temporary smoothing
Nanokeratin System.
Seven specialist formulas — each engineered for a specific hair type and chemical history. Results last 12–16 weeks. All formulas formaldehyde-free and aldehyde-free. Suitable for afro, natural, colour-treated, bleached, and extension hair.
Refortify Smoother — Afro & Textured Hair
From £279
Revive Smoother — Natural Hair
From £279
Refine Smoother — Colour-Treated Hair
From £279
Replenish Smoother — Blonde & Bleached Hair
From £279
Resmooth Hair Smoother
From £129
Retexture Hair Smoother
From £129
Rexten Hair Safeguard — Extensions
From £139
See the full Nanokeratin range including aftercare bundles →
At a glance
QIQI vs Nanokeratin — which one?
QIQI Hair Controller
Type: Permanent smoothing / straightening
Lasts: Up to 5 months
Formulas: 3 (by hair texture)
Home use: Yes — designed for it
Price: From £119 (3+ treatments per bottle)
Best for: People who want lasting frizz control or straightening and prefer to treat at home
Nanokeratin System
Type: Temporary smoothing
Lasts: 12–16 weeks
Formulas: 7 (by hair type and chemical history)
Home use: Yes
Price: From £129
Best for: People who want specialist formulas for specific hair types — afro, colour-treated, bleached, extensions
Not sure? Take the 60-second quiz for a personalised recommendation →
Common questions
Formaldehyde-free keratin — FAQ
Are QIQI Hair Controller treatments formaldehyde-free?
Yes. All QIQI Hair Controller formulas — Thick & Coarse, Wavy & Curly, and Thin & Delicate — are 100% formaldehyde-free. They use a cysteine-based formula that restructures the hair without any formaldehyde or aldehyde derivatives.
Is Nanokeratin System formaldehyde-free?
Yes. Every Nanokeratin System smoother is formaldehyde-free and aldehyde-free across the entire range — all seven specialist formulas including Refortify, Revive, Refine, Replenish, Resmooth, Retexture, and Rexten.
Why does formaldehyde matter in keratin treatments?
Some older keratin treatments contain formaldehyde or methylene glycol, which releases formaldehyde gas when heated during application. This is a known carcinogen and respiratory irritant. Formaldehyde-free treatments deliver the same smoothing results without any of these health risks.
Do formaldehyde-free treatments work as well as traditional ones?
Yes. Modern formaldehyde-free keratin treatments use alternative bonding agents like cysteine and glyoxylic acid derivatives that deliver equivalent smoothing, frizz control, and longevity. QIQI results last up to 5 months. Nanokeratin results last 12–16 weeks.
Can I apply a formaldehyde-free keratin treatment at home?
Yes. QIQI Hair Controller is designed for both professional and home use. Because it is formaldehyde-free, there are no toxic fumes during application — making it safe to use in a normal bathroom without commercial ventilation.
Which formaldehyde-free treatment is right for my hair?
For permanent straightening that lasts up to 5 months, choose QIQI Hair Controller in the formula matched to your hair type. For temporary smoothing that lasts 12–16 weeks, choose the Nanokeratin System formula matched to your hair type or chemical history. Take our 60-second quiz for a personalised recommendation.
Free UK delivery over £80
Safe keratin treatment. Real results.
Zero formaldehyde. Zero aldehydes. Professional smoothing that works. Dispatched within 1–2 working days.