L'Oréal Professionnel Metal Detox Pre-Shampoo 250ml is a salon-developed anti-porosity filler treatment, applied to wet hair before shampoo to protect the fibre from the metal particles found in everyday tap water. Powered by 2% Glicofiller technology, it limits metal-driven damage during colour, lightening and chemical services and helps the cleansing and conditioning steps that follow perform at their best.
About L'Oréal Professionnel
L'Oréal Professionnel is the salon-exclusive haircare division of L'Oréal, founded in Paris in 1909 by chemist Eugène Schueller, the inventor of the first modern hair dye. Its Serie Expert range is built in collaboration with stylists and trichology specialists; the Metal Detox line, introduced in 2022, was developed to address a problem identified in L'Oréal's research labs — that metal particles deposited on the hair from water can break down inside the fibre, weakening it and altering colour results.
Key ingredients
- Glicofiller (2%): a high-performance complex featuring Glicoamine — the small-molecule active that penetrates and neutralises metal inside the hair fibre — combined with a filler that helps reduce porosity
- Aminopropyl triethoxysilane: bonds to the cuticle to limit water absorption that carries metal deeper into the cortex
- Polyquaternium-67: a smoothing conditioning agent that improves slip and detangling once rinsed
- Lactic acid: helps re-balance the hair's pH and supports a closed, smooth cuticle
What it does
- Neutralises metal particles inside the hair fibre to limit breakage and dullness
- Reduces porosity so colour, treatments and moisture sit more evenly along the lengths
- Helps protect colour-treated and lightened hair from unwanted tonal shifts
- Leaves hair feeling smoother and easier to comb after rinsing
Who it's for
Best for anyone who colours, highlights or chemically treats their hair, and for those who notice their hair is rougher, duller or more prone to breakage in hard-water areas. It's a particularly useful first step before any in-salon colouring or lightening service, but it also works as a weekly home treatment for compromised lengths.
How to use
- Wet the hair thoroughly with warm water.
- Apply the pre-shampoo to the lengths and ends, distributing evenly with the fingertips.
- Leave on for around five minutes to let the Glicofiller work through the fibre.
- Rinse, then follow with the Metal Detox Anti-Metal Cleansing Cream and Anti-Deposit Protector Mask for a complete in-salon-style routine.
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