Long-term efficacy of linear-scanning 808nm diode laser for hair removal compared to a scanned alexandrite laser

Summary Background and Objective Alexandrite and diode lasers are commonly used for hair removal. To date, the available spot sizes and repetition rates are defining factors in terms of penetration depth, treatment speed, and efficacy. Still, larger treatment areas and faster systems are desirable. To compare the efficacy, tolerability, and subject satisfaction of a continuously linear-scanning 808nm diode laser with an alexandrite 755nm laser for axillary hair removal. Study Design A total of 31 adults with skin types I-IV received 6 treatments at 4-week intervals with a 755nm alexandrite laser (right axilla) and a continuously linear-scanning 808nm diode laser (left axilla). Axillary hair density was assessed using a computerized hair detection system. Results There was a significant reduction in axillary hair after the 6th treatment (P