L'Oreal Serie Expert Silver Magnesium Shampoo is a neutralising cleanser that gradually prevents grey and white hair from turning yellow. Protects from smog and aggressive products. Enriched with Magnesium. Benefits Gives anti-yellowing effect. Provides shine. Leaves hair healthy and soft. Protects hair from UV rays and polluting atmospheric agents. Technology Gloss Protect System leaves hair soft, supple, shiny and natural-looking. Enriched with cosmetic actives, anti-yellowing agents and Keratin derivatives, it prevents white, grey hair from turning yellow, leaving it smooth and shiny. How to use Apply evenly to wet hair. Emulsify and rinse thoroughly. Reapply if needed. Use the product twice a week for at least 4 weeks, for best results.