Prior to receiving treatment, I have been candid in revealing any condition that may be a contraindication to this treatment, such as: pregnancy or lactating (if so, consult with your physician prior to treatment and avoid products containing salyclylic acid). Recent facial surgery, allergies, tendency to cold sores/fever blisters, use of topical and/or oral prescription medications such as: Tretinoin, Retin- A, lsotretinoin, Accutane, Differin, Tazorac, Avage, EpiDuo or Ziana.