A valuable input has been provided by a group of physicians from Korea, which published the results of their study in May issue of the Journal of the American Academy of Dermatology.

The group did a very interesting split-face clinical study of 18 Korean patients with facial acne scars. They treated on cheek with a 585-nm pulsed dye laser (PDL) and the other with a 1064-nm Nd:YAG laser to compare the efficacies of these two lasers in the treatment of acne scars.

Each patient received 4 sessions of PDL or Nd:YAG laser at 2-week intervals in a randomized split-face manner.


“Both lasers induced notable and comparable improvement in the appearance of acne scars, particularly superficial scars, with significant reductions in the scores associated with the clinical evaluation scale for acne scarring (ECCA). Histologic evaluations revealed significant increases in collagen production and deposition following both lasers. Patient satisfaction scores concurred with these improvements. Ice-pick scars and boxcar scars tended to respond better to PDL and Nd:YAG lasers, respectively”.

Atrophic acne scars of representative patients showed notable improvement at 8 weeks after completion of laser treatment. A and B is PDL-treated side versus; C and D – Nd:YAG laser–treated side. Left column A and C) is the baseline (before treatment). Right column (B and D) – 8 weeks after completing 4 laser treatment sessions. Ice-pick and deep scars (C and D) as well as superficial scars (A and B) showed noteworthy improvement after laser treatments.

The study group concluded that both lasers are effective modalities for the treatment of acne scars. Results appear to be very comparable in efficacy.

LaserOffers.com Comment

This is a notable study, which conclusively shows that both lasers work well on Asian skin type, and the skin type is a very important factor in choosing one laser over the other. Nd:YAG laser should clearly be the laser of choice for a darker skin type. The 1064 nm wavelength is a much safer modality for the skin of color and tanned skin.

The study did not address the pain level for patients. Again, 1064nm with a short pulse width would be preferable as the patients with darker skin would experience less pain during the treatment.

An experienced aesthetic medical professional should determine the choice of laser for a specific skin color, skin condition and the scar type to achieve optimal results for the individual patient.