Microneedling for Acne Scars: Does It Work? How many microneedling sessions for acne scars you need depends on scar depth and skin type. Usually, the standard is three to six sessions. These should be spaced about four weeks apart. Shallow scarring often responds visibly within three sessions. Moderate to deep scarring usually needs six sessions for improvement to level off. Sessions booked closer together than four weeks do not allow enough time for the new collagen to form and mature before the next treatment. Read More: https://karminabeautyclinic.com/microneedling-for-acne-scars-does-it-work/