GK Hair Developers Vol 30

Key Benefits

Formulated for use with all of the GK Hair Colors and Lighteners
Provides ideal viscosity
Create optimal bowl and brush application as well as bottle application

How to Use

Mix with GK Hair Color or Lighteners. Use 10 Volume Cream Developer for up to one level of lift and 20 Volume Cream Developer for up to two levels of lift and for 100% grey coverage. Use 30 Volume Cream Developer for up to three levels of lift and 40 Volume Cream Developer for up to 4 levels of lift when using the GK Hair Blonde Series.