Make your own detergent in a few minutes quite simple
40 g washing soda
30 g curd soap
essential oil for the scent
You put a pot with 2L water to boil. Then you crush the curd soap and mix it with the washing soda in the water. Stirring constantly (whisk) you let everything boil and then take the pot off the stove.
Let the detergent cool for about 40 minutes and it is ready for filling.