Make sure to check on hair every 10 minutes during the bleaching process to avoid over-processing. According to Byrne, "Ideally, no lightener should ever be left on the hair longer than 30 to 40 minutes without any restructuring additives, such as We

This foundation MHD colouring tutorial guides you through the basics of removing residue colour following a colour treatment. Once processed it is essential that the product is thoroughly removed from the hair and scalp to avoid damage and possible legal

With the easy spray-on application, Defy Damage instantly goes to work, strengthening and rebuilding bonds, heightening product performance, and providing powerful (and immediate) damage protection right before your eyes. It's completed with ProSeries