Wella Professionals
Wella Smooth Filler.
Instant frizz reduction in one step. Wella Smooth Filler fills structural gaps in the hair fibre for a smooth, glossy finish — no heat or processing required. Professional 500ml size. Available to buy online in the UK.
What it is
What is Wella Smooth Filler?
Wella Smooth Filler is a professional treatment from Wella Professionals designed to instantly fill gaps and porous areas in the hair fibre. Damage from colour processing, heat styling, and environmental exposure creates uneven surfaces along the hair strand — this is what causes frizz, roughness, and dullness.
The Smooth Filler formula targets these structural gaps directly, depositing filler molecules that create a uniform, sealed surface. The result is immediately smoother, glossier hair with significantly reduced frizz. No heat activation, no lengthy processing time, no complex application technique.
This is not a keratin treatment and does not permanently restructure the hair. It is a conditioning filler treatment that delivers visible, instant results from a single application. It works on all hair types and is safe for colour-treated, highlighted, and chemically processed hair.
Application
One step
Heat required
None
Results
Instant
Hair types
All
How it works
How to use Wella Smooth Filler.
The application process is simple — no salon appointment necessary. Wella Smooth Filler is designed for professional use but is straightforward enough for home application.
01
Cleanse
Wash hair with a clarifying or sulfate-free shampoo. Towel dry until damp — not dripping.
02
Apply
Distribute Wella Smooth Filler evenly through mid-lengths and ends. Use more on areas with the most damage or frizz.
03
Wait
Leave in for the recommended development time. No heat tools, no cap, no complicated setup.
04
Rinse & style
Rinse thoroughly and style as normal. Results are immediate — smoother, glossier, frizz-free hair from the first use.
Buy online
Wella Smooth Filler — £209
Size: 500ml — professional salon size
Brand: Wella Professionals
Delivery: Free UK delivery on orders over £80. Dispatched next working day. 1–3 working days delivery.
Wella Professionals Smooth Filler instantly fills gaps in the hair fibre to reduce frizz and deliver smooth, glossy results in just one step. No heat or processing required. Suitable for all hair types.
Who it is for
Is Wella Smooth Filler right for you?
Wella Smooth Filler suits a wide range of hair concerns. It is especially effective for the following.
Frizzy or rough hair
Fills surface gaps that cause frizz. Creates an even hair surface that reflects light and resists humidity.
Colour-treated hair
Safe for all colour services. Repairs porosity caused by bleaching, highlighting, and chemical processing.
Heat-damaged hair
Straighteners, curling irons, and blow dryers create micro-damage along the hair strand. Smooth Filler targets these areas.
Dull, lifeless hair
Damaged hair scatters light instead of reflecting it. By filling gaps, the treatment restores natural shine and gloss.
Between keratin treatments
Use between QIQI Hair Controller or Nanokeratin applications to maintain smoothness while your treatment grows out.
Low-commitment smoothing
Want smoother hair without a permanent chemical treatment? Smooth Filler delivers instant results that wash out — no long-term commitment.
How it compares
Wella Smooth Filler vs keratin treatments.
Wella Smooth Filler
Type: Fibre-filling treatment
Lasts: Until next wash (cumulative improvement)
Heat required: No
Processing time: Minimal
Price: £209 (500ml — multiple uses)
Best for: Instant frizz fix, damaged hair repair, between-treatment maintenance
QIQI Hair Controller
Type: Permanent smoothing / straightening
Lasts: Up to 5 months
Heat required: Yes (flat iron)
Processing time: 60–90 minutes
Price: From £119 (3+ treatments per bottle)
Best for: Long-lasting frizz elimination, permanent straightening, home use
Nanokeratin System
Type: Temporary smoothing
Lasts: 12–16 weeks
Heat required: Yes (flat iron)
Processing time: 60–90 minutes
Price: From £129
Best for: Specialist hair types — afro, colour-treated, bleached, extensions
Not sure which treatment is right for you? Take the 60-second quiz →
Common questions
Wella Smooth Filler — FAQ
What is Wella Smooth Filler?
Wella Smooth Filler is a professional in-salon treatment by Wella Professionals that fills structural gaps in the hair fibre caused by damage, chemical processing, or environmental stress. It delivers instant frizz reduction, smoothness, and high-gloss results in a single step — without heat or extended processing time.
How does Wella Smooth Filler work?
The treatment uses a filler technology that targets porous, uneven areas of the hair strand. By filling these gaps, it creates a smoother surface that reflects light evenly — giving hair a glossy, frizz-free finish. The formula bonds to the hair fibre without requiring heat activation or a lengthy development period.
Who is Wella Smooth Filler suitable for?
Wella Smooth Filler is suitable for all hair types. It is particularly effective for anyone experiencing frizz, roughness, or dullness caused by damage, colour processing, heat styling, or environmental factors. It works on straight, wavy, curly, and coily hair textures.
How long does Wella Smooth Filler last?
Results from Wella Smooth Filler are immediate and typically last until your next wash. For sustained results, repeated applications build cumulative improvement in hair condition and smoothness over time. Using sulfate-free aftercare extends longevity between applications.
Is Wella Smooth Filler the same as a keratin treatment?
No. Wella Smooth Filler is a fibre-filling treatment, not a traditional keratin treatment. Keratin treatments like QIQI Hair Controller restructure the hair bond for lasting straightening or smoothing (up to 5 months). Wella Smooth Filler fills surface gaps for instant smoothness without changing your hair structure. They serve different purposes — and some clients use both.
Can I use Wella Smooth Filler at home?
Wella Smooth Filler is designed as a professional salon treatment but can be applied at home. The application is straightforward — no heat tools or complex timing required. Apply to clean, damp hair, distribute evenly, and rinse. The 500ml professional size provides multiple applications.
Where can I buy Wella Smooth Filler in the UK?
You can buy Wella Smooth Filler online at Nero Hair with UK-wide delivery. We stock the full 500ml professional size. Orders over £80 qualify for free delivery. All orders are dispatched next working day with 1–3 day UK delivery.
How much does Wella Smooth Filler cost?
The Wella Smooth Filler 500ml professional size is £209 at Nero Hair. This is the full salon-size bottle — not a single-use sachet. At 500ml, it provides multiple treatments depending on hair length and thickness. Free UK delivery on orders over £80.
Free UK delivery over £80
Smooth, glossy hair. One step.
Wella Smooth Filler — professional fibre-filling treatment. No heat. No processing. Immediate results. Dispatched next working day. UK delivery 1–3 working days.