Aftercare that protects your results.
Best conditioner after keratin treatment
After a keratin treatment, your conditioner matters almost as much as your shampoo. The right one keeps hair hydrated and the cuticle sealed; the wrong one — with sulphates or salt — quietly shortens your results.
By Yasmin, founder of Nero Hair · Updated 22 September 2026
The short answer
Match it to your treatment.
After QIQI Hair Controller: Hydration Fixation Conditioner every wash, and Super Soaker Masque once a week. Both are made to extend Hair Controller results.
After Nanokeratin System: the matching Nanokeratin mask for your formula — Revive, Refine, Replenish or Refortify.
After any other keratin: any conditioner that is sulphate-free and sodium chloride-free.
Every wash
Conditioner
Once a week
Masque
Avoid
Sulphates & salt
Apply to
Mid-lengths & ends
What to look for
The checklist.
Sulphate-free
Check for SLS and SLES — mostly in shampoos, but some 2-in-1 and co-wash products contain them too.
Sodium chloride-free
Salt is used as a thickener and gradually breaks down smoothing treatments.
Hydrating, not heavy
Smoothed hair needs moisture, but heavy silicones and butters on the roots can make it flat and greasy.
Made for treated hair
Formulas for keratin- or colour-treated hair use gentler ingredients that work with the treatment.
How to use it
Conditioner, masque, oil.
Every wash: conditioner
Mid-lengths to ends, leave for 2–3 minutes, rinse with lukewarm water.
Once a week: masque
Swap your conditioner for a deep-conditioning masque to keep hair hydrated between treatments.
To finish: a drop of oil
A light finishing oil on the ends seals in moisture and adds shine.
Skip clarifying products
Save clarifying shampoo for the day of your next treatment.
What we recommend
Keratin-safe conditioning.
QIQI Hydration Fixation Conditioner and Super Soaker Masque for Hair Controller, and Nanokeratin masks matched to each formula.
From £45 · 300ml
Hydration Fixation Conditioner
Sulfate-free keratin aftercare conditioner that detangles, hydrates, and locks in moisture. Extends the life of your QIQI Hair Controller treatment by weeks. 97% experienced hydrated, smoother hair after first use.
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From £24 · 75g / 250g / 350g / 1kg
Super Soaker Smoothing Masque
Deep-conditioning keratin aftercare masque for intense hydration between smoothing treatments. Extends QIQI Hair Controller results. Smooths, strengthens, and locks in shine. 98% reported healthier-looking hair after weekly use.
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From £32 · 250ml
Refine Mask — Colour-Treated Hair
Restorative Refine Mask for colour-treated and processed hair. Maintains Refine Smoother results while protecting and intensifying colour. Deeply conditions without compromising tone or treatment longevity.
Shop now →Common questions
Conditioner after keratin — FAQ
What conditioner should I use after keratin treatment?
A sulphate-free, sodium chloride-free conditioner made for treated hair. After QIQI Hair Controller, use Hydration Fixation Conditioner; after Nanokeratin, use the matching Nanokeratin mask for your formula.
Can I use a hair mask after keratin treatment?
Yes — once a week is ideal. A deep-conditioning masque like Super Soaker keeps smoothed hair hydrated between treatments.
Does conditioner affect how long keratin lasts?
Yes. Conditioners with sulphates or sodium chloride break down smoothing treatments faster. The right conditioner helps results last their full time.
Can I use leave-in conditioner after keratin?
Yes, if it is sulphate- and salt-free. Keep it on the mid-lengths and ends so hair does not look flat at the roots.
Free UK delivery over £80
Make every treatment last longer.
Formaldehyde-free professional treatments and sulphate-free aftercare. Dispatched next working day. UK delivery 1–3 working days.