1. Push and twist the black bottle cap clockwise to release the blue essence into the basic essence.

2. Shake until the two flavors are evenly mixed.

3. Unscrew and discard the black cover.

4. Take a proper amount of essence with a silver dropper and apply it to face and neck.

5. You can focus on massaging the positions with large pores on the face and prone to acne, such as the chin and the sides of the nose, to promote absorption.

Please note that this is only a hypothetical description, and the specific usage may vary from product to product. It is recommended that you check the product manual or consult relevant sales personnel for more accurate guidance.