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L’Oréal Professionnel Metal Detox - Hair Care Grounded in Science

Inaccurate colour results following a colouring or lightening service, fast colour fading and dulling or altered tone with subsequent washes can all be frustrating experiences for both clients and professional hair colourists. Research has shown that metal build up in hair follicles pre and post colouring services can contribute to these unwanted changes. 

The degree to which this occurs is very dependent on geographical location, from country of residence to regional differences. High concentrations of metal in hair1 can be found in 90% of the population of certain European countries. 

In response, L'Oréal Professionnel has developed the Metal Detox hair treatment protocol as part of the Serie Expert range of tailored solutions, designed to meet specific hair concerns. The innovative Metal Detox for hair leverages the properties of Glicoamine, a patented molecule with the ability to bind and remove these heavy metals in hair such as copper. Discover more details and feedback from our salon experts with infographics on the Metal Detox educational page. 

The Professional Multi-step Metal Detox Hair Protocol

Metal Detox consists of a 3 step in-salon protocol used by your professional colourist during a lightening or colouring service, followed by a 2 step at-home protocol to be used under guidance from your salon stylist. Collectively, these include the Metal Detox Pre Treatment Spray, Metal Detox Shampoo, Metal Detox Conditioner and Metal Detox Mask. To discover whether you could benefit from removing and prevent metal build up in hair, ask your hair care professional at a salon near you about Metal Detox.1

1Metals concentration in hair: high > 30ppm 

Innovation - 9 patents1

[Metal Detox]

Guarantee your colour,
& lightening.

Introducing Metal Detox: a ground-breaking coloured hair protocol using Glicoamine to detoxify hair by neutralizing metal deposits found in the hair fibre. Backed by seven years of research and hairdressers around the world, L’Oréal Professionnel's Metal Detox for hair will enhance your colour results & lessen hair breakage.

Patented technology1 with Glicoamine to neutralise
metal inside the fibre.

87% less breakage risk.2
100% reliable colour results.3

Compatible with all colour and lightening brands.

1Pre treatment: FR, UK, SP, IT, CN, US,BR. Shampoo: FR, CN, JP, MX, US, BR, UK, GER, SP, IT, US. Care: FR, UK, GER, SP, IT, CN, JP, BR. MASK: FR, CN, JP, MX, US, BR.
2Instrumental test, after application of Pre treatment + technical procedure + Shampoo + Mask. 3Optimised colour uptake with no impact on lift.



We have discovered Glicoamine , the
molecule small enough to penetrate and
neutralise metal inside the hair fibre.

Charlotte Feltin.

Head of L'Oréal Haircare Laboratories

Thanks to our collaboration with the worldwide authority on metal, Ioannina University, we identified a perfect molecule: Glicoamine.
It is the only active agent small enough to trap and neutralise metal inside the fibre.
Fibre integrity is preserved, colour is mastered, and the oxidant gets to fully do its job.

Innovation - 9 patents

[Metal Detox] 3-step protocol in salon.

Innovation - 9 patents

[Metal Detox]

2-step protocol
at home.

The 2-step at home metal in hair protocol ensures hair continues to be protected by metals in hair to prolong hair colour vibrancy and prevent hair damage. Follow this easy L'Oreal Professionnel metal detox at home regime.

  • 1
    cleansing cream.
  • 2
    protector mask.

[Metal Detox]

By pros,
For pros.

L'Oreal Professionnel's Metal Detox is backed by seven years of research and hairdressers around the world. Made by pros for pros, this scientifically proven protocol will enhance client results for reliable, long-lasting colour time-and-time again.

Charlie Le Mindu,
Hair Designer

Innovation - 9 patents

[Metal Detox]

The protocol has been co-created with our 3 Partner hairdressers:
Charlotte Catherin, Sebastian Langman and Washington Nunnes.

Charlotte Catherin.

French balayage & colour artist.


This protocol brings to balayage a pure result.

What do you like most about Metal Detox?

The protocol brings balayage to a pure result. It's like hair gas been cleared out of its yellow undertone. Like this baby blonde all women crave for.

What is it like to use Metal Detox?

Hair is really coated. The brush adherence on hair is awesome. Plus, it's easy to apply. It holds better on most fragile reflects, such as copper and strawberry blonde. Shades felt cooler. And most of all shininess was extreme.

I'm very impressed by the performance of this line-up.

What were you most impressed by?

I'm very impressed by the performance of this line-up. It was possible to have a result with extreme protection even working with a high level of lightening.

How does the usage affect a service in the salon?

The usage has no impact on the service time or in the bleach texture, this crucial for us professionals.

Washington Nunnes.

Color, Balayage & Lightening Expert.


Sebastian Langman.

Colour, Balayage & Lightening Expert.


From the first application I can see a big difference.

How has Metal Detox changed how you colour, balayage, and lighten hair?

I've never seen anything like this project before. From the first application I can see a big difference in the end result of every colour I performed. The tonal clarity was drastically improved, as well as the overall condition of the hair.

How was metal in the hair affecting you?

As a colourist, metal in the water has been huge issue and a big frustration for years. In Massachusetts it affects over 75% of my clientele.

Discover the reviews

More than thousands of hairdressers have already tested it across the globe.

L'Oréal Professionnel I'm so happy this came out!!! I feel like every time I wish something was out there to fix a problem, you come out with a new/updated product. You always read my mind So so happy and grateful to get to try it ❤️

Megan Johansson

Hairdresser in London

I didn't tell her what it was, I said I have something new I'm trying. She loved the result, her hair was so so soft and I was finally able to transition her hair to a lighter, brighter, cooler blond. Thank-you I've enjoyed the discovery with this new innovation💕

Rachelle Art Vault

Hairdresser in Paris

L'Oréal Professionnel Thank-you. I found the protocol was straightforward, very user friendly and the great results were visible when I blowdried her hair. Her hair texture is naturally coarse and it can make the colour look uneven, it looked fresh and even after using this line☀️💕

Rachelle Art Vault

Her hair always felt that there was some residue in her hair and they were really fragile. Today I did the metal detox and her hair felt reborn. Metal detox is amazing!! More that I'm using it and more I'm in love!!💕❤️ thank you 🙏🏻 LP that always create amazing products and the stylists technical work easier

Anna Cecchi Smith

This new innovation is a game changer!! The silky feel of the hair, the shine is multi dimensional and when using it with the Multi Tech with Bonder inside, the strength of the hair is maintained! I'm in love! Thank you L'Oreal Professionnel!!♥️ #newinnovation #metaldetox #lorealpro

April Wiper

My daughter's friend's hair (age 16) is very long and curly. Of course, she wants to be a level 1000 blonde with no breakage, gold or yellow. The final results were lighter and more even than we ever have gotten her. Thank you for letting me sample this ❤️❤️❤️

Kim Grillo

Unique results in lighting techniques!!! It does not slow down the process and gives incredibly clean and clear results, and the quality of the hair is perfect!!! #lorealpro #inovation #metaldetox

Silvana Petrova

Learn more about Metal Detox on ACCESS.

Come and discover Metal Detox, thanks to many training contents only available on ACCESS.