We recommend you don’t. Canada Hair extensions aren’t virgin hair, and therefore have already been processed. Dyeing, toning, or applying purple/blue shampoos to them may reduce the quality of the extensions. If you still wish to dye the extensions, always avoid bleaching the extensions. Test one weft before dyeing the full set. Keep in mind that by dyeing your hair extensions, you can no longer return them. If you decide to dye the extensions, you do it entirely at your own discretion. We cannot be held accountable for the outcome. If you don’t like the color you’ve received, simply follow our return policy in order to get a full refund.