40 Volume is a 12% H2O2 Processing Gel Developer for times when you need 4 levels of lift. Processing time 50 minutes.
All J Beverly Hills Developers are specifically formulated to work with J Beverly Hills Colour.
40 Volume is a 12% H2O2 Processing Gel Developer for times when you need 4 levels of lift. Processing time 50 minutes.
All J Beverly Hills Developers are specifically formulated to work with J Beverly Hills Colour.