Microdermabrasion is not recommended for people who have deep scars, active keloids, undiagnosed lesions, a recent herpes outbreak, warts on the face, active acne (stages 3 and 4), an auto-immune system disorder, or unstable diabetes. Pregnant women should not undergo Microdermabrasion. Individuals with deep scars, facial creases, or other moderate-to-severe skin defects should consider a stronger treatment such as a chemical peel, dermabrasion, or laser skin resurfacing.