Joico LumiShine Lumi10 22 Volume Accelerator is pumped up with an extra .6% of peroxide (compared to traditional 20 Volume Developers). The result? When used with LUMI10 Permanent Crème Color, it delivers super-fast and complete coverage in just 10 minutes. 

In a bowl or bottle, mix one part LUMI10™ Permanent Crème Color with
one part LUMI10™ Accelerator.
Timing: Process FOR 10 MINUTES.
Not recommended with heat.

To ensure 100% gray coverage in 10 minutes, it is not recommended to use another developer volume.