You can complain to the Consumer Protection Committee and ask it to mediate. You can also bring a lawsuit directly to the court to investigate the legal responsibility of the beauty salon. According to the General Principles of the Civil Law, the Interpretation of the Supreme People's Court on Several Issues Concerning the Application of Laws in the Trial of Personal Injury Compensation Cases and the Interpretation on Several Issues Concerning the Determination of Civil Tort Liability for Mental Damage, beauty salons can be required to apologize in writing and compensate for medical expenses, lost time, nursing expenses, transportation expenses, mental damage compensation, attorney fees, etc. If it constitutes disability, you can also claim disability compensation. If the damage leads to disfigurement, you can appeal to the court to appropriately increase the amount of compensation for mental damage.