Quic Silver is a color intensifying shampoo that enhances brilliance and depth of coat color, particularly grey and white. The added bluing agent makes it great for stain removal. Quic Silver does not contain harsh chemicals or bleaches that leave the hair dull and dry.Quic silver will not intensify color if diluted with water or other shampoos. Apply full strength, allow to remain in place for 5-10 minutes. Rinse well.