Suggested amount of the first agent: 40–50g for short hair, 50–60g for medium hair, and 70g or more for long hair.
Leave to process for 30 minutes.
Choose a 6% second agent for coarse, oily, or otherwise hard-to-color hair through normal hair, or a 3.7% second agent for soft, dry, or otherwise easy-to-color hair.
If new growth is 3cm or longer, applying the color in two stages is recommended.