New System Professional Silver Shampoo is perfect for creating cool blonde reflections. It's unique formula removes unwanted brassy, gold or yellowy tones. For best results shampoo and lather in to your hair and leave in for a few minutes. Just rinse it out, condition and style as normal. You will see a definite and immediate improvement in your hair colour. Works great on greys as well if you want to add a little subtle tone - guys like it too.