Redken Color Extend Blondage Color Depositing Shampoo
This color-depositing purple shampoo for blonde hair is part of Redken's newest Color Extend color care collection. This toning and strengthening system will help keep your blonde brighter and healthier. NO TO BRASS. YES TO STRONG AND BRIGHT.
This purple shampoo has ultra violet pigment and Triple Acid Protein complex to tone, strengthen and brighten all in one for a brighter*, stronger** blonde. The ultra violet pigments help to preserve blonde haircolor between appointments by keeping undertones at bay. 
If you're blonde, purple shampoo should definitely be a regular part of your haircare routine.