The specific product you are asking about appears to be the Yardlie Shiny Diamond Keratin Shampoo. While the size is sometimes listed as 500g, it is also frequently listed as 550g or 500ml/500g.Here is a summary of the features, benefits, and typical price:Yardlie Shiny Diamond Keratin Shampoo (Approx. 500g/550g)FeatureDetailKey IngredientsKeratin, Diamond Extracts, and often contains anti-dandruff and volumizing agents.SizeTypically 500g/550g bottle.Primary FocusVolumizing, Shining, and Dandruff Control.Suitable ForAll hair types, including hair with thinning/breakage concerns.