Mix the first agent and second agent in a 1:1 ratio.
Suggested amount of the first agent: short hair, 40–50g; medium hair, 50–60g; long hair, 70g or more.
Allow to process naturally for 30 minutes.
Choose a 6% second agent for coarse or oily hair and hair that is difficult to color, through to standard hair. Choose a 3.7% second agent for soft or dry hair and hair that is easy to color.
If new growth is 3cm or longer, the product recommends applying in two stages, using different application timing for new growth and previously colored hair, or changing the combination of first and second agents.
Wear gloves during application. Avoid contact with the scalp, skin, and clothing. If the product gets on the scalp or skin, wipe it off immediately with water or remover and rinse thoroughly. Do not use on eyebrows, eyelashes, or anywhere other than the scalp. Avoid contact with eyes. If it gets into the eyes, do not rub; rinse thoroughly with water or lukewarm water and seek advice from an ophthalmologist immediately.
Do not use if the scalp is abnormal, or discontinue use if an abnormality occurs and consult a dermatologist or other specialist. Keep out of reach of infants and young children. Store away from very hot or cold places and direct sunlight. Color may transfer to clothing, hats, or pillowcases when hair is wet, after sweating, rain, or washing, or after using hair products such as hair tonics or styling products.