Want to get the shiniest hair of your life*? Discover L'Oreal Paris Elvive Glycolic Gloss Sulphate-Free Shampoo, the 1st step of our new at-home glossing routine. Powered with [Glycolic Acid] known for its multiple benefits in skincare, the 2% Gloss Complex with [Glycolic Acid] penetrates the hair's fibre improving shine, smoothness & strength. Instantly transform your hair for up to 5 x washes.**The result?Free from sulphates, the Gloss Complex with [Glycolic Acid] produces a rich & generous foam whilst cleansing softly & filling hair with care. Hair is shiny, detangled & soft to touch. What makes it effective?Shiny hair is healthy-looking hair because its smooth surface perfectly reflects light. Hair damage disrupts cuticles, making fibres rough, porous, and dull unable to reflect light.Glycolic Gloss Sulphate-Free Shampoo is powered with [Glycolic Acid] which has a small molecular weight able to penetrate the hair & inject it with care. The Glycolic Gloss Complex contains conditioning agents to seal cuticles with a lasting shine glaze. Hair is shinier & smoother than ever before. How to use?Apply and massage on hair, then rinse. For maximum shine, use the Glycolic Gloss Conditioner, and follow with the Glycolic Gloss Rinse-Off 5 Minute Lamination Treatment and Leave-In Serum. Suitable for all:Effective on all hair types, ranging from straight, wavy, curly, and coily.*Consumer Use Test, women with dull hair, shampoo + conditioner. 78% of 160 UK women agreed** instrumental test after one application of the trinomen & 5 applications of the shampoo.*** instrumental test after application of the shampoo + conditioner.**** instrumental test after use of the shampoo + conditioner + rinse-off treatment.