1. The Garment is first dipped in to a tank, which contains Sulfuric acid. This is a preparatory process.
2. After the above process, garment is put in to a tumble machine, and required Na2so4 (Sodium bisulfate or Sodium hydrogen Sulfate) chemical is added. This is the actual process where burnout happens.
3. Once the burnout happens, a neutralizer (NACL) is added to neutralize the chemicals.
4. Finally, the garment is put inside a Tumble dryer to get the final output. The timing of each process varies depending upon the burnout effect required.
Cold pigment process and burnout process can be done together for the same garment. Examples of burnout and cold pigment techniques.