This has to be my favorite product when I am sporting white, blonde, violet, or silver hair colors. There is absolutely no sign of brassiness when I use this. I usually "over use" it to keep a purple rinse/tint in my hair, but using it less frequently/as directed will not turn your hair purpley, but balance out any yellowing and leave you with a beautiful platinum color. No blonde(white to platinum especially) should ever go without this shampoo. It is worth way more than its price.