Novel Low Fluence Combination Laser Treatment of Solar Lentigines in Type III Asian Skin.

OBJECTIVE: To demonstrate a novel low fluence combination laser technique [Erbium-doped yttrium aluminum garnet (Erb:YAG) and neodymium-doped yttrium aluminum garnet (Nd:YAG)] to effectively treat solar lentigines in type III Asian skin in a single session.

DESIGN: A prospective study.

SETTING: A Singapore-based clinic.

PARTICIPANTS: Five patients (all females) were enrolled into the study. The ages ranged 35-60 years; all patients had Fitzpatrick skin type III.

MEASUREMENTS: Photographs were taken at baseline and at 1-month follow-up. These were reviewed by two independent physicians who were blinded to the study. Changes in pigment severity were assessed by a 5-point scale (1: Aggravation of pigment, 2: No change, 3: 25-50% improvement, 4: 51-75% improvement, and 5: 76-100% improvement).

RESULTS: All patients received a single treatment session. At 1-month follow-up, a reduction in pigment was observed in all patients. Both physicians' reports were independently agreeable. All patients scored 5, having >90% improvement in pigment severity. No hypopigmentation, postinflammatory hyperpigmentation (PIH), or recurrence was seen.

CONCLUSION: Low fluence combination laser is effective and safe for clearance of solar lentigines in type III Asian skin.