warning! please note that waxing cannot be performed on anyone using prescription or over the counter products containing Retin-A, Accutane, Green Cream, Glycolic, AHA (Alpha Hydroxy Acid), or derivatives of those products. failure to disclose such information before your service begins will result in injury. if you are unsure please disclose all products. for desired waxing result, hair growth should be approximately ¼ inch.