Peroxide is used as the developer or oxidizing agent. The developer removes pre-existing color. Peroxide helps the colour pigment travel into the cortex.
Peachers has a range of different companies that provide peroxide.
The Peroxide feautured is Kleral.(Magicolour)
The levels are:
10 Volume 3%
20 Volume 6%
30 Volume 9%
40 Volume 12%