When washing, we strongly recommend rinsing at least twice. (We recommend rinsing at least twice when using detergents other than Rinenna detergent.)
There is a ``washing'' process to remove soiled items from clothing, but during the ``washing'' process, the clothes are soaked in the washing machine along with the dirty water.
If you rinse once, there is a high possibility that dirty water will remain on the clothes, resulting in stains and odors.
It is important to thoroughly rinse and clean items that have removed dirt, so please be sure to rinse at least twice before washing.