This is a bundle of the Schwarzkopf Blondme Premium Developer and Premium Lightener, Its anti yellow agents offers perfect neutralisation since the agents directly target the pigment responsible for the warm yellow undertones of the hair Duo Includes Schwarzkopf Professional Blondme Premium Developer 6% - 20Vol 900mlSchwarzkopf Professional Blondme Premium Lightener 450g Key Features and Benefits Neutralise warm undertones with anti yellow agents. Developer's high concentration of mineral oil helps maintain the natural moisture balance of your clients hair Minimises hair breakage by protecting the hair fibre Up to 9 levels of lift Ideal For Professionals looking for a easy to use bleach that is suitable for any technique with a developer that will help protect and maintain the natural moisture balace of your clients hair THIS IS A PROFESSIONAL PRODUCT AND WE RECOMMEND IT IS ONLY USED BY HAIRCARE PROFESSIONALS.