Features: Our oxalic acid cleaner contains oxalic acid, cocamidopropyl betaine. It can be used frequently on a daily basis to ensure safety. Sodium urea sulfate accelerates the dissolution of dirt and improves cleaning efficiency. Its application method is very simple: spray wine evenly at a distance of 15-20 cm from the dyed surface, and wait 5-30 minutes for the detergent to fully take effect. Gently wipe the stain with a brush or rag and rinse with water. And even stubborn stains can be removed quickly. Save time and effort, the cleaning process is simple and efficient. Lasting cleaning effect, reduce the trouble of repeated cleaning. Packing list: 1/2/3pcs Oxalic Acid Cleaner.