马克，你好。我知道你是皮肤护理专家。
因此，你应该和你的医师或皮肤护理专家商讨有关使用剂量和次数方面的问题。
Thus, you should consult with your Physician or Skin Care Specialist on dosage and frequency.
如往常一样，请随您的个人美容医师或皮肤护理专家，为您设计个别的需求与建议。
As always, please follow the individual protocol designed by your Physician or Skin Care Specialist.
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