Suggested amount of the first agent: short hair, 40–50g; medium hair, 50–60g; long hair, 70g or more.
Leave naturally for 30 minutes.
Select the second agent: 6% for coarse or oily hair that is difficult to color, through standard hair; 3.7% for soft or dry hair that is easier to color.
If new growth is 3cm or longer, applying in two stages is recommended, using different application times for new growth and previously colored hair, or changing the combination of the first and second agents.