Ampoules should be used as soon as possible after opening; otherwise, they risk bacterial contamination and loss of efficacy. The specific steps are as follows:
Dispense an appropriate amount of facial cleanser into your hands.
Use the cleanser to wash your face.
Rinse thoroughly with clean water.
Open the ampoule.
Pour the serum into your hands.
Gently pat the serum onto the areas of your skin requiring treatment, ensuring even coverage.
