Smoothen Hair Treatment

Demi-Permanent Smoothing Treatment at William & Mary

Smoother, shinier, more manageable hair — without harsh regrowth lines.

If your hair feels frizzy, difficult to manage, affected by humidity or takes too long to style every day, our new Smoothen Demi-Permanent Smoothing Treatment is designed to help create softer, smoother and more manageable hair with results lasting up to 3 months.

Unlike traditional straightening systems, Smoothen is designed to soften texture and reduce frizz while still allowing your hair to move naturally and feel like you — just easier.

Introductory launch appointments

Book Your Smoothen Treatment

Smoother, shinier and more manageable hair with our demi-permanent smoothing treatment. Designed to reduce frizz, soften texture and make everyday styling easier, with results lasting up to 3 months with the correct aftercare.

Maddie Stylist

£180

Kieran Senior Stylist

£200
Longer, thicker or more textured hair may require additional time and product
Smooth Filler Hair Treatmentmarch (4)
Smooth Filler Hair Treatmentmarch (5)

What Is Smoothen?

Smoothen is a professional demi-permanent smoothing system that helps to:

Kieran’s Introduction Experience has been created as the perfect way to meet him, experience his approach to hair, and enjoy a beautiful salon finish.

Your appointment includes:

Reduce Frizz & Humidity

Improve Softness & Shine

Quicker & Easier Styling

Smoother, More Polished Results

Help Blow-Dries Last Longer

Improve Day-to-Day Manageability

Because the treatment is demi-permanent, it gradually softens out over time with a natural grow-out — meaning no harsh regrowth lines or obvious maintenance bands.

With the correct aftercare and home maintenance, results can last for up to 3 months.

Book Now

Who Is It For?

Smoother, Easier Hair Day-to-Day

  • Struggle with frizz or humidity
  • Spend too long styling your hair
  • Want smoother, easier hair day-to-day
  • Find your hair difficult to control
  • Want a softer finish without completely straightening your hair
  • Want lower-maintenance styling while keeping natural movement

Suitable for:

  • Frizzy hair
  • Thick or unruly hair
  • Wavy textures
  • Colour-treated hair
  • Clients wanting smoother, more manageable results
How Does It Work?

A Treatment Tailored to Your Hair

01

Consultation

Your appointment begins with a full consultation where we assess your hair type, texture and desired result.

02

Treatment Application

The smoothing system is then applied and carefully sealed into the hair to help soften texture, reduce frizz and improve manageability.

03

Natural-Looking Finish

Every treatment is tailored to the individual to ensure the most natural-looking result possible.

Treatment Pricing

Introductory Launch Appointments

As we introduce Smoothen and build our treatment portfolio, we are currently offering a limited number of introductory appointments.

Maddie — Stylist £180
Kieran — Senior Stylist £200

Approximate Appointment Times

  • Short hair: 2–2.5 hours
  • Standard hair: 3 hours
  • Long/thick hair: 3.5–4 hours

Prices are based on standard appointment timings and hair density.

Longer, thicker or more textured hair may require additional time and product, which will be discussed during consultation.

Maintaining Your Results

To help maintain your smoothing result for as long as possible, we recommend using professional home care designed specifically for treated hair.

Using incorrect products or excessive heat may reduce the longevity of your results.

Your stylist will guide you through the best maintenance routine for your hair during your appointment.

Frequently Asked Questions

Everything You Need to Know About Smoothen

Will this make my hair completely straight?

No — Smoothen is designed to soften texture and reduce frizz while maintaining natural movement and body.

How long will the treatment last?

With the correct maintenance and aftercare, results can last for up to 3 months.

Will I get noticeable regrowth?

No — because this is a demi-permanent smoothing system, it fades gradually with a softer, more natural grow-out.

Can I still curl or style my hair?

Yes — your hair can still be styled as normal, but it should feel smoother, softer and easier to manage.

Is it suitable for coloured hair?

In most cases, yes. Your stylist will assess your hair during consultation to ensure the treatment is suitable for you.

Ready For Easier Hair?

Book your Smoothen consultation today and discover smoother, shinier, lower-maintenance hair.

Introductory launch appointments are now available with Maddie and Kieran.

Maddie Stylist

Book With Maddie

Kieran Senior Stylist

Book With Kieran
Questions?
Message us with the word SMOOTHEN and our team will be happy to help.