- If you're someone who loves to play around with hair colour, whether permanent or the balayage type, you may have experienced the harmful effects of metal deposits on your hair. - Metals like copper and iron in the water can create oxidative stress on your hair, leading to a dull and damaged look. - This is where L'Oreal Professionnel Metal Detox Serum In Oil comes in. - This excellent hair oil contains a unique blend of nourishing oils that helps remove harmful metal deposits from your hair. - The serum-in-oil formula penetrates deep into the hair fibres to protect them from harmful metal deposits, leaving your hair looking healthy and shiny. - And because we all know how damaging heat styling can be for our hair, this serum in oil provides an added layer of heat protection up to 230° C, so you can enjoy fabulous hair sans the damage.