Apply 2-3 doses on face and neck in the evening. Avoid contact with the eyes and lips. For sensitive skin: use PERFECT SKIN REFINER 1 time a week, and increase the frequency according to the tolerance. For normal skin: use PERFECT SKIN REFINER every night. For mature skin/dry to extra-dry skin: use 1 night PERFECT SKIN REFINER and the other night RHA® SERUM, then increase the frequency of PERFECT SKIN REFINER use according to the tolerance.
Apply on cleansed face every evening, 15-21 days before procedure.