(Acidicated Hot Plate) (RP-RPD- RPKK- HRP - HRPKK-LP-LPKK-TRP-TRPD-TRPKK) It is cleaned by scaling (Oxide) Hydrochloric acid or Sulfuric acid baths on Hot Rolled Roller surfaces and preservative to prevent re-oxidation. oil is lubricated. The product, called Acid Cleansed Hair, is shipped to the user as a roller or sliced, dye cut according to the demand.