A Combined Triple-Wavelength (755nm, 810nm, and 1064nm) Laser Device for Hair Removal: Efficacy and Safety Study

Background: Photoepilation by a single-wavelength laser device is being commonly used for hair removal. Whether emitting multiple laser wavelengths to induce hair unit damage would be beneficial is yet to be established. Objective: To evaluate the safety and efficacy of hair reduction using a novel simultaneous multi-wavelength laser device. Patients and methods: A retrospective cohort study was carried out among adult males. Hairy sites were treated by a simultaneous triple-wavelength (755nm, 810nm and 1064nm) laser device (Soprano Titanium. Caesarea, Israel: Alma Lasers Ltd). Treatment parameters were: fluence of 7-9J/cm2, pulse frequency of 9-10Hz and spot sizes of 2cm2 or 4cm2. Participants underwent up to 6 treatments at 6-8 weeks intervals and were followed for 4-6 months. Clinical photography before and after treatment was documented. Treatment efficacy was assessed using Global Aesthetic Improvement Scale (GAIS; scale of 0 [no improvement] to 4 [excellent improvement; Over 75% hair reduction]) by two independent dermatologists. Participants' satisfaction was rated on a scale of 1 (not satisfied) to 5 (very satisfied). Pain perception and adverse events were recorded as well. Results: A total of 27 treatment sites among 11 participants, with Fitzpatrick skin type III-V, were included. Mean hair reduction was 3.4 out of 4 in the GAIS. Participants' satisfaction rate was high (mean, 4.8). No adverse events were recorded. Conclusion: Simultaneous triple-wavelength laser device is a safe and effective hair removal modality.