Bulbs & Roots Developer 5 Vol 1000ml

How to use:

5 Vol. to obtain color depth without lightening.
Time: 20-25 min.

10 Vol. to obtain color depth and 1 lightening level.
Time: 20-25 min.

20 Vol. to cover white hair and 2 lightening levels.
Time: 30-40 min.

30 Vol. to obtain 3 lightening levels and cover simultaneously.
Time: 35-40 min.

40 Vol. for 4-5 lightening levels.
Time: 40-45 min.