NIOSHTIC-2 Publications Search

Occupational exposures and determinants of ultrafine particle concentrations during laser hair removal procedures.

Eshleman EJ; LeBlanc M; Rokoff LB; Xu Y; Hu R; Lee K; Chuang GS; Adamkiewicz G; Hart JE
Environ Health 2017 Mar; 16:30
Background: Occupational exposures to ultrafine particles in the plume generated during laser hair removal procedures, the most commonly performed light based cosmetic procedure, have not been thoroughly characterized. Acute and chronic exposures to ambient ultrafine particles have been associated with a number of negative respiratory and cardiovascular health effects. Thus, the aim of this study was to measure airborne concentrations of particles in a diameter size range of 10 nm to 1 microm in procedure rooms during laser hair removal procedures. Methods: TSI Model 3007 Condensation Particle Counters were used to quantify the particle count concentrations in the waiting and procedure rooms of a dermatology office. Particle concentrations were sampled before, during, and after laser hair removal procedures, and characteristics of each procedure were noted by the performing dermatologist. Results: Twelve procedures were sampled over 4 days. Mean ultrafine particle concentrations in the waiting and procedure rooms were 14,957.4 particles/cm3 and 22,916.8 particles/cm3 (p < 0.0001), respectively. Compared to background ultrafine particle concentrations before the procedure, the mean concentration in the procedure room was 2.89 times greater during the procedure (p = 0.009) and 2.09 times greater after the procedure (p = 0.007). Duration of procedure (p = 0.006), body part (p = 0.013), and the use of pre-laser lotion/type of laser (p = 0.039), were the most important predictors of ultrafine particle concentrations. Use of a smoke evacuator (a recommended form of local exhaust ventilation) positioned at 30.5 cm from the source, as opposed to the recommended 1-2 in., lowered particle concentrations, but was not a statistically significant predictor (p = 0.49). Conclusions: Laser hair removal procedures can generate high exposures to ultrafine particles for dermatologists and other individuals performing laser hair removal, with exposure varying based on multiple determinants.
Ultrafine particles; Hair analysis; Lasers; Surgery; Occupational exposure; Airborne particles; Cosmetics workers; Cosmetics; Clinical techniques; Medical equipment; Respiratory irritants; Cardiovascular function; Cardiovascular system disorders; Respiratory function; Air contaminants; Particle size; Particle counters; Dermatology; Nanoparticles; Sampling; Smoke control; Author Keywords: Laser; Ultrafine particles; Surgical plume; Laser hair removal; Occupational exposures
Lisa B. Rokoff, Department of Environmental Health, Harvard T.H. Chan School of Public Health, 401 Park Drive, Suite 401 East, Landmark Center, Boston, MA, USA
Publication Date
Document Type
Journal Article
Email Address
Funding Type
Fiscal Year
Identifying No.
Source Name
Environmental Health: A Global Access Science Source
Performing Organization
Harvard School of Public Health
Page last reviewed: May 11, 2023
Content source: National Institute for Occupational Safety and Health Education and Information Division