L'Oréal Professionnel Paris Metal Detox Pre-Shampoo Treatment — 150ml, strengthens hair & reduces metal build-up

L'Oréal Professionnel Metal Detox Pre-Shampoo Treatment is a leave-on pre-wash formula that reinforces hair fiber, fills micro-breaks and helps shield color-treated or damaged hair from metal build-up in hard water.

This pre-shampoo step is designed to be used before cleansing to reduce hair porosity and limit the excessive uptake of metals found in tap water. By targeting micro-breaks in the hair shaft, the formula makes strands less absorbent, which helps preserve color vibrancy and reduces fragility. For best performance, pair it with the Metal Detox Shampoo and Mask from the same L'Oréal Professionnel range.

How does this pre-shampoo treatment strengthen fragile or color-treated hair?

The treatment works on the hair surface and inner fiber to reinforce weakened areas and refill microscopic gaps. Filling these micro-breaks diminishes the hair’s tendency to soak up damaging metals and excess water, which can otherwise lead to breakage and dull color. Results reported after one use include significantly reduced breakage and noticeably stronger hair.

• Refills micro-breaks in the hair shaft to reduce porosity.
• Reinforces fiber for improved tensile strength and fewer snapped strands.
• Prepares hair for subsequent Metal Detox Shampoo and Mask steps.

What benefits will I notice after using Metal Detox Pre-Shampoo once?

In a single application, hair feels less porous and is better protected against metal absorption from water. The brand reports up to 96% less breakage and a measurable increase in strength after one use when used as directed. You should experience smoother texture and easier detangling at rinse time.

• Immediate reduction in hair porosity for a smoother finish.
• Marked decrease in breakage during washing and styling.
• Softer, more manageable hair ready for shampoo and mask.

How and when should I use this product in my hair routine?

Apply the pre-shampoo treatment to dry or damp hair before you shampoo, leave it on according to instructions, then rinse and continue with Metal Detox Shampoo and Mask. It’s intended as a preparatory step that maximizes the effectiveness of the follow-up cleansing and conditioning products. Use it when you know water quality is poor or whenever your hair feels weakened after coloring or chemical services.

• Use before shampooing, on dry or slightly damp hair.
• Rinse, then follow with Metal Detox Shampoo and Mask for full system benefits.
• Ideal to add into routines after coloring, bleaching or frequent heat styling.

Will this help protect my hair color and reduce brassiness?

By reducing the hair’s uptake of metals that can dull or alter color, the pre-shampoo helps maintain color clarity and longevity. It doesn’t replace color-safe shampoos or toning treatments, but it creates a less porous surface, which makes color-preserving products work more effectively. For noticeable maintenance of shade and shine, use the complete Metal Detox range.

• Limits metal infiltration that can affect color tones.
• Improves surface condition so color-care products perform better.
• Works as part of a broader color-maintenance routine.

Who is this for: This L'Oréal Professionnel Metal Detox Pre-Shampoo Treatment is suited to people with damaged, porous, chemically treated or color-processed hair who want to minimize breakage and protect their color from the effects of hard water metals. It’s a preventive, salon-grade step for anyone seeking stronger, less absorbent hair before cleansing and conditioning.

Ingredients

1248604 E - INGREDIENTS: AQUA / WATER / EAU • LAURETH-5 CARBOXYLIC ACID • AMINOPROPYL TRIETHOXYSILANE • COCAMIDOPROPYL BETAINE • SODIUM CHLORIDE • PEG-150 DISTEARATE • PHENOXYETHANOL • PEG-40 HYDROGENATED CASTOR OIL • POLYQUATERNIUM-67 • LACTIC ACID • LAURETH-4 • SODIUM HYDROXIDE • CAPRYLYL GLYCOL • LIMONENE • HEXYL CINNAMAL • LINALOOL • CITRAL • GERANIOL • POLYQUATERNIUM-7 • SODIUM BENZOATE • PARFUM / FRAGRANCE (F.I.L. N70031596/1).