Enhance your hair with Matrix Essentials Total Results So Silver Shampoo. 33.8oz. Made in USA. Neutralizes unwanted brassy warmth. Eliminates dull, yellow tones. Illuminates highlights on blondes. Adds shimmering brightness to grey and white hair. Makes it a professional and effective shampoo for brightening and enhancing grey or silver hair. So for luminous bright hair, look no further. Use on hair as needed.