Prior to receiving any type of skin resurfacing treatment, you must discontinue use of Accutane® for six months, Retin-A® for two weeks, and glycolic acid and alpha-hydroxy acid products for a week before your treatment. During your treatment series, stay out of the sun and avoid sunless tanning. Do not take aspirin or other blood thinners for at least three days before your treatment. You cannot be treated while you have infections or sores in the area.