1. We recommend usage for evenings as this is high-concentrate, and spread lightly on areas with whiteheads and dead skin cell in the serum/essence stage after using skin and toner to clean skin texture.
2. Use clean hands or cotton pad to spread on the face, to absorb by tapping softly with fingertips.
3. If you feel severe stimulation or your purpose is removal of whitehead and sebum, wash off after 4 to 5 minutes lightly with lukewarm water.
4. Only after fully absorbing AHA 7 whitehead Power Liquid, use other essence and cream, and the next morning do not forget to use sunscreen such as sun cream.