Microdermabrasion cannot be expected to remove raised or deeply pitted scars as usually seen with old, severe acne scars. It is best to consult a dermatologist for treatment options. It is not a treatment for active acne, but has demonstrated some assistance in keeping pores clean. It cannot be used to remove tattoos. It takes many treatments just for mild scarring and since ink is buried deep under the skin, it will not work. If you have advanced wrinkles, microdermabrasion may not make much of a difference in their appearance, but will improve your skin's condition.
