Demi- permanent Hair Smoothing Treatment
At Avant Garde, we’re excited to introduce the new Smoothfiller demi-permanent treatment to tame frizz from Wella Professionals - the latest innovation in hair care for those who crave smoothness without compromising texture.
- This salon-exclusive service works to smooth, fill, and restructure your hair, leaving it softer, shinier.
- Powered by breakthrough technology and a vegan formula with just 8 ingredients, it fills hair with bond forming molecules for a natural, long-lasting smoothness for more manageable hair for up to 3 months.
- Enjoy effortless styling, humidity resistance, and incredible frizz control, all while maintaining the natural look and movement you love.
Please note - This service is only available at Avant Garde Salon in Bishops Cleeve, Cheltenham.
Book A Hair Consultation
The consultation is a key part of any appointment and this will be especially important if you are planning a major hair makeover. During an informal and friendly initial consultation, your stylist will get to know a little about you, your hair care routine and your hair goals as well as any styles you've got your eye on.
Ready to experience silky, manageable hair with our Demi-Permanent Hair Smoothing Treatment? Book your appointment at our Bishops Cleeve Salon today!
What Is SmoothFiller For Hair?
Demi hair smoothing is a gentle, heat-activated treatment that works inside your hair to create new, lasting bonds, helping to smooth and strengthen from within. The SmoothFiller Service from Wella transforms naturally frizzy hair into sleeker, more manageable locks that resist humidity and are quicker to style.
If you spend lots of time blow-drying your hair straight only for frizz to creep back in, SmoothFiller gives you up to three months of smoother, easier styling, all while keeping your hair’s natural texture and movement.
The service is completed in three simple steps:
Step 1: Prep
Your hair is thoroughly cleansed to remove any buildup and prepare it to absorb the treatment effectively.
Step 2: Application
Your stylist applies SmoothFiller evenly through the hair (avoiding the scalp) and allows it to develop for about 20 minutes before rinsing.
Step 3: Activation
After rinsing, your hair is blow-dried and flat-ironed in small sections. The heat activates SmoothFiller’s smoothing ingredients, leaving your hair silky, sleek, and beautifully manageable.
How Is SmoothFiller Different From a Keratin Treatment?
SmoothFiller isn’t your typical keratin treatment it’s designed to make your hair smoother, softer, and easier to manage without taking away your natural texture. So, if you love your waves or curls, don’t worry - they’ll still be there, just more refined and frizz-free.
Another big difference is how it grows out. Instead of harsh lines or visible regrowth, this treatment fades gradually and evenly over time, so your hair always looks natural between salon visits.
And the best part? No post-treatment rules. You don’t have to wait days to wash your hair, you can simply enjoy your refreshed, silky-smooth hair straight away.
Is SmoothFiller Right for Me?
If you find your hair hard to manage, frizzy, or just not as smooth as you’d like, SmoothFiller could be your new go-to treatment. It works by refilling and restructuring your strands from the inside out, helping to tame frizz and make your hair feel softer, sleeker, and easier to handle day after day.
Whether your hair is straight but frizzy, wavy, or curly, this demi-permanent smoothing service is designed to enhance your natural texture - not erase it.
Here’s why our clients love it:
- Long-lasting smoothness and frizz control – even on humid days. Results last for up to three months.
- Effortless styling – your hair becomes easier to blow-dry, straighten, or air-dry with a polished finish.
- No harsh regrowth lines – the effects fade gradually and softly over time.
- Quick and gentle formula – low-fume, dermatologically tested, and takes just 20 minutes to develop.
- No post-treatment restrictions – wash your hair whenever you like, using any shampoo (yes, even if it’s not sulfate-free!).
- Color compatibility – you can even refresh your colour with Color Touch in the same salon visit.
How Much Does It Cost?
Our Demi-Permanent Hair Smoothing Treatment is priced between £177 – £219, depending on your chosen stylist’s level of experience and expertise. Every stylist at Avant Garde Salon is highly trained, and we take pride in matching you with the right person to suit your hair type, goals, and budget.
If appointments are fully booked, you can call or message the salon to join our waiting list, we’ll contact you as soon as an appointment becomes available.
During your consultation, your stylist will carry out a thorough assessment of your hair and discuss everything in detail, including:
- The exact cost of your treatment
- The results you can expect based on your hair type
- Aftercare and maintenance to keep your hair smooth and healthy
- This ensures you have complete confidence and clarity before your appointment
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Hair Filler FAQs
Is hair filler good for hair?
«Yes, smooth hair filler is good for the hair as it helps restructure and restore damaged fibers, leaving the hair smoother, stronger, and healthier.
How often should I have a hair filler?
«Hair filler treatments are usually recommended every 12 weeks. This allows enough time for the hair to benefit from the restructuring effects while maintaining long-lasting smoothness and strength.
Will it damage my hair?
«No, hair filler treatments are safe and will not damage your hair. In fact, they help repair and strengthen damaged strands by restoring moisture and structure.
Are there any reasons why I can't have this service?
«You may not be suitable for a hair filler treatment if your hair is extremely damaged or weakened from excessive chemical processing. In such cases, it’s best to focus on restorative care first to rebuild strength before having the treatment.