A new study published in Dermatologic Therapy aimed to report the improvement rates after each session of Er: YAG laser treatment in resurfacing the acne scars.

This was a retrospective study that analyzed data of 35 patients with acne scars treated with fractional ablative Er: YAG laser. The patients received 1-4 sessions of treatment, with four-week intervals, and the improvement rates were recorded after each session.

The results showed that the improvement rate of lesions varied between 1% and 25% in 34 patients at the end of the first session. In one patient, the improvement rate was detected as 26-50%. At the end of the 4th session, the rate of improvement was 26-50% in 14 out of 24 patients and 51-75% in ten patients. None of the patients showed a 76-100% improvement at the end of the 4th session, whereas 48.6% of the patients were satisfied with the treatment.

It was inferred that in patients with a high expectation of an excellent improvement, a higher number of sessions of the laser treatment and/or combination treatments with different treatment methods should be planned.

Source: Dermatologic Therapy. 2020 Sep 3;e14270. doi: 10.1111/dth.14270.