If you want your hair extensions to maintain their shine, glamour, and thickness, it’s best to leave them natural and not dye them. USA Hair doesn’t sell virgin hair, instead, we sell hair that has already been processed to utmost perfection. Therefore, dyeing, toning, or applying purple/blue to the extensions or putting them through further process may damage the extensions. However, if you still wish to dye your extensions, you’ll have to do it on your own responsibility since you can’t return your extensions to USA Hair after they have been dyed. We recommend dyeing a small portion of the extensions to test the results before dyeing it all. We also recommend absolutely avoiding any processes that involve bleaching the extensions. If you’re not satisfied with the color of the extension when you receive them, you can easily send them back due to our safe return policy and get a full refund.