Elgon Colour Ultra Silver Shampoo 1LEven more pigments to neutralise yellow undertones, for ultra cool glossy blondes Ultra Silver Shampoo is designed for blonde customers who want to tone their hair, remove yellow undertones and obtain an ultra cool ice blonde. For professional use only, it is enriched with active ingredients for a synergistic action, while the enhanced purple pigment contained within together with Blueberry extract neutralise even the most stubborn yellow undertones,