Prior to filing a lawsuit, file a personal injury claim with the laser hair removal's insurance carrier. It would be advisable to be examined by a dermatologist.  When you complete your medical treatment and are released by the dermatologist or are declared by the dermatologist to be permanent and stationary which means having reached a point in your medical treatment where no further improvement is anticipated, obtain your medical bills, medical reports, and documentation of any wage loss.  Your personal injury claim filed with the laser hair removal's insurance carrier should include these items.  Compensation for the medical bills is straight reimbursement.  The medical reports will document the nature and extent of your injury and will be used to determine compensation for pain and suffering, which is an amount in addition to the medical bills.  Compensation for wage loss is straight reimbursement.  If the case is settled with the laser hair removal's insurance carrier, NO lawsuit is filed.  If you are dissatisfied with settlement offers from the laser hair removal's insurance carrier, reject the settlement offers and file a lawsuit for negligence against the laser hair removal.  If the case is NOT settled with the laser hair removal's insurance carrier, you will need to file your lawsuit for negligence against the laser hair removal prior to the expiration of the applicable statute of limitations or you will lose your rights forever in the matter.