Hairtell member Fenix, graciously posted FDA links for reporting side effects such as burns and laser hair stimulation, etc. to the FDA.
FDA Medical Device online reporting for consumers
https://www.accessdata.fda.gov/scripts/medwatch/index.cfm?action=reporting.home
FDA Consumer Complaint coordinators for each state who can guide over the phone.
https://www.fda.gov/Safety/ReportaProblem/ConsumerComplaintCoordinators/default.htm