How to make homemade molding water

Method 1: Add 1 tablespoon of salt, 3 tablespoons of laundry detergent or 3 less of laundry detergent to the cup and stir with hot water until completely melted.

Method 2: Scrape the soap into a thin powder and put it in a cup, heat water and stir.

First, add laundry detergent to the container, make sure it's Longchamp and Biron laundry detergent, I haven't tried the others. Then add and laundry detergent as much as the detergent, a little salt at home, stirring well, so that the molding water is ready.