German for Hard Wax, Koch Chemie Hartwachs BMP Spray Wax is a spray on LSP (last step product) for your paintwork. You get the benefits of hard and resistant wax that Koch gives a gloss rating of 9.2 in their rating system. Again perfect for the user that does not want to fuss with the ceramic application process or wants to protect their paint while trying to time weather conditions before polishing and applying ceramic.