L'Oréal Professionnel Série Expert Metal Detox Mask 250ml

L'Oréal Professionnel Série Expert Metal Detox Mask 250ml is an intensive in-salon-strength conditioning mask designed to neutralise and remove the metal particles that accumulate on the hair from tap water, hard water and air pollution. Built around L'Oréal's patented Glicoamine technology, the formula penetrates deep into the hair fibre, locks onto these metal traces, and helps prevent the breakage and dulled colour they cause — particularly noticeable on bleached, balayage and dyed hair.

About L'Oréal Professionnel Série Expert

Série Expert is the professional salon range from L'Oréal Professionnel, the brand's dedicated stylist-and-hairdresser arm that has been formulating advanced haircare for backwash services since 1909. Metal Detox launched in 2021 as a flagship innovation, originally targeted at colourists who saw clients' colour fading and snapping after services performed in hard-water areas; it quickly became the brand's most-discussed product line of recent years.

Key ingredients

• Glicoamine — a small, patented molecule that penetrates the cortex of the hair, captures metal particles, and helps stop them re-depositing.
• Amodimethicone — a smoothing conditioning silicone that helps seal the cuticle for soft, glossy hair.
• Behentrimonium Chloride and Cetearyl Alcohol — long-chain conditioners that detangle and add slip without weighing the hair down.

Key benefits

• Reduces breakage by up to 97% (brand-tested, vs. unwashed hair)
• Delivers up to 120 hours of hydration
• Helps prevent metal-induced colour fade for longer-lasting tone
• Restores softness, shine and slip from the first use
• Safe for colour-treated, bleached and chemically processed hair
• Works equally well on virgin hair to strengthen and condition

Who it's for

Best suited to anyone who colours, bleaches, balayages or chemically straightens their hair, and especially for those living in hard-water areas where metal deposits build up most quickly. Equally useful for virgin hair that feels weakened, dry or rough — the conditioning base is rich enough to act as a weekly deep-treatment mask for normal-to-thick hair textures.

How to use

1. Shampoo the hair as normal — ideally with L'Oréal Professionnel Metal Detox Shampoo — and rinse.
2. Towel-dry to remove excess water.
3. Apply an even layer of the mask through the mid-lengths and ends, working in section by section.
4. Leave on for at least one minute (2–5 minutes for thicker or more damaged hair).
5. Rinse thoroughly, then follow with the Metal Detox Concentrated Oil for added smoothness if available.
6. Use one to three times a week depending on hair condition.

Specifications

• Size: 250ml
• Format: Conditioning hair mask
• Brand: L'Oréal Professionnel
• Range: Série Expert — Metal Detox
• Patented technology: Glicoamine
• Suitable for: Colour-treated, bleached, chemically processed and virgin hair