Open Siren SZN box of pre-cut pop-up hair foil with a mermaid print foil standing up, on a green water background
A single Siren SZN foil with the mermaid print on a water background, marked Limited Edition Drop
Closed Siren SZN box lid seen from above, with mermaid and leaf artwork and the Westwater Foil lettering
Back of the Siren SZN box with the Hair foil, upgraded copy, recycling marks and barcode
Close-up of the WF signature embossing on silver hair foil, with a small WF mark in the centre
Six Siren SZN boxes stacked two across and three high, the top two open with foil showing
Closed Siren SZN shipping carton holding 12 boxes of pre-cut pop-up hair foil

Siren SZN

Pop-up hair foil, pre-cut and pre-folded · 500 foils · 15 × 30 cm
Regular price$174
$0.06/item foil

or 4 interest-free payments of $43.50 with

or 4 interest-free payments of $43.50 with

One-off purchase

Pre-order. Charged today, ships from Monday 23 November 2026.


Free trolley collectable
Add $150 more to unlock it!
  • Shipping from $18. Express from $29.
Siren SZN is our first Limited Edition Drop. Featuring pre-cut pop-up hair foil, engineered with our in-house aluminium composition for improved flexibility and strength.
Our signature finish and deeper embossing grip the hair, so the section stays where you put it, and every foil comes pre-folded onto the print so you can paint straight onto the silver side.
When the box runs low, lock in the Lift and Lock tray and the last foils rise up to meet you and stay locked in, with no falling back down, ever.
Every detail of this hairdressing foil is designed to support a more precise, controlled colour application.

Trusted on the trolley

5.0 · 13 reviews

Your review enters the monthly draw

Anonymous

Im obessssed with this foil, you can really feel the quality. Well done Westwater!

Em

Love love loveeee this foil. You can actually feel the dimples on the foil when applying colour to them. They have been perfect for me. Im converted, thank you for send me samples! My new favourites.

Sal

Im really happy with these foils. Thank you for letting me trial them in my salon!! The girls have been asking me when we can get some more. Excellant job Westwater. Sal x

Photo from Sal's review
Anonymous

I am very grateful to have been a trial hairdresser for the Westwater foils, they are now my ride or dies. I need to get my hands on another box asap!!

Brit

So happy to got to trial this foil. It's been really nice, I'm switching over, I've been converted!!!!

Hair & Harlow

We’ve honestly been loving the foil so far. It is SO convenient behind the chair, and the packaging is just the cutest! 🤍 It’s made our foiling process so easy and efficient, and the foil itself performs really well throughout application.

We genuinely can’t thank you enough for sending it to us and letting us try everything!

We’d definitely recommend the foil to other stylists.

Thank you again!! xx

Photo from Hair & Harlow's review
Denni

Omg absolutely amazing, LOVEEEE!! They are perfect and I absolutely love the length on them 👌👌👌 I let one of the girls have some haha! And she loved them also

Photo from Denni's review
Amy

Really loving these foils, they definitely feel more grippy than my normal ones.

Hair By Shayla

These foils are amazing! As someone who does foils every day, I can honestly say they’re some of the best I’ve used. They have virtually no slip, making application so much easier and more precise. Not only are they super practical, but they’re absolutely stunning too. They add a beautiful touch to every service and make the whole foiling process a pleasure. Highly recommend! 💗💗

Photo from Hair By Shayla's review
Katya

The foil is lovely
The thickness
How easily is folds
It doesn't slip
Is the prefect width
I loved it
I had bought cartons last year from another company, so when I'm due to purchase more, I come to you!

Photo from Katya's review
Anonymous

Really nice foils. Been trialing them for a couple weeks after receiving a PR box and I can say they have performed well. I’ll be switching to these from now on!

M

We got selected to trial these foils out and have been using them since May. I like how they feel compared to my other foil, so pretty too!

Jen

I’ve been given a couple of boxes to trial in my salon over the last couple of months and I have absolutely fallen in love with this foil. I love the print but more than that I love the feel. It just feels better than what I’m used to, it’s hard to explain, it feels like I can control it more and I’m finding myself not worrying about bleeds as much. I’m really enjoying it can’t wait to see more prints!

TRUSTED ON THE TROLLEY

This product has no reviews of its own. The merchant grouped it with related products, so the reviews shown are from across that group.
S
Sal

Im really happy with these foils. Thank you for letting me trial them in my salon!! The girls have been asking me when we can get some more. Excellant job Westwater. Sal x

H
Hair & Harlow

We’ve honestly been loving the foil so far. It is SO convenient behind the chair, and the packaging is just the cutest! 🤍 It’s made our foiling process so easy and efficient, and the foil itself performs really well throughout application.

We genuinely can’t thank you enough for sending it to us and letting us try everything!

We’d definitely recommend the foil to other stylists.

Thank you again!! xx

D
Denni

Omg absolutely amazing, LOVEEEE!! They are perfect and I absolutely love the length on them 👌👌👌 I let one of the girls have some haha! And she loved them also

H
Hair By Shayla

These foils are amazing! As someone who does foils every day, I can honestly say they’re some of the best I’ve used. They have virtually no slip, making application so much easier and more precise. Not only are they super practical, but they’re absolutely stunning too. They add a beautiful touch to every service and make the whole foiling process a pleasure. Highly recommend! 💗💗

K
Katya

The foil is lovely
The thickness
How easily is folds
It doesn't slip
Is the prefect width
I loved it
I had bought cartons last year from another company, so when I'm due to purchase more, I come to you!

A
Anonymous

Im obessssed with this foil, you can really feel the quality. Well done Westwater!

E
Em

Love love loveeee this foil. You can actually feel the dimples on the foil when applying colour to them. They have been perfect for me. Im converted, thank you for send me samples! My new favourites.

A
Anonymous

I am very grateful to have been a trial hairdresser for the Westwater foils, they are now my ride or dies. I need to get my hands on another box asap!!

B
Brit

So happy to got to trial this foil. It's been really nice, I'm switching over, I've been converted!!!!

A
Amy

Really loving these foils, they definitely feel more grippy than my normal ones.

A
Anonymous

Really nice foils. Been trialing them for a couple weeks after receiving a PR box and I can say they have performed well. I’ll be switching to these from now on!

M
M

We got selected to trial these foils out and have been using them since May. I like how they feel compared to my other foil, so pretty too!

J
Jen

I’ve been given a couple of boxes to trial in my salon over the last couple of months and I have absolutely fallen in love with this foil. I love the print but more than that I love the feel. It just feels better than what I’m used to, it’s hard to explain, it feels like I can control it more and I’m finding myself not worrying about bleeds as much. I’m really enjoying it can’t wait to see more prints!

Salon chat· typing...

Did you leave the foil a review??

You

Why?

Every review goes in a monthly draw, and one gets their whole order refunded 👀

Terms apply

You won't see us doing capes, bowls and clips.
Instead we spent a year engineering the best foil on the market.

Foil's our thing

and we're very, very good at it.

  • Pre-order, ships 23 NovemberOn orders before 2pm Sydney time
  • 500 foils per boxBecause more is more.
  • WF signature size, 15×30cm.The most flexible size to suit every section.

WF Lift & Lock System

We made the box do a little more of the work.

Foils hiding at the bottom? Not on our watch. 

Engage the lift tray and it pops up, locks in and keeps your remaining foils within easy reach.

Down to the last foil. 

Literally.

Worth splitting hairs over...

Other foils
How much foil are we talking?
Always 500.
Sometimes 500, sometimes not. 🤷🏽‍♀️
Fancy a change?
New prints on rotation.
Same old, same old.
What happens when the box gets low?
Lift. Lock. Keep foiling.
Time to go digging.
The right size for the job.
15 × 30cm. The best all rounder size.
Not one-size-fits-all.
Get a grip!
Great grip. Better control.
Less grip, more slip.
Katie Blyth, Founder of Westwater Foil Co

Welcome and thank you x

I wanted to personally thank you for the overwhelming amount of love, kindness and support you have all shown me while building Westwater Foil Co from the ground up. 

As hairdressers we give so much of ourselves to every client, bringing an immense amount of love, care and attention to detail to every client, all day, every day. 

This business is for you. 

You give the same passion and precision to the 6pm client as we did to the 9am client, even after 10+ hours on your feet, barely a mouthful of food and a toilet break. I know what that feels like. I’ve been behind the chair for over 23 years and I love it now just as much as I did in 2003. 

That’s why when building this foil, it had to be perfect, because I respect hairdressers too much to bring anything less than perfect into your hands and salons. 

I welcome you to let me know at any stage what foil YOU want. What prints YOU want. What size YOU want. And I always do my best to bring it to life. 

And again, thank you. I can't wait to bring Westwater into your salons and hopefully make your days a little bit easier and brighter.

Handwritten Katie signature with a heart