Clean laundry with soap nuts!
Soap nuts are a renewable resource that does not burden water bodies and seas like ordinary detergents.
Instructions for using the soap nuts: Put 3-6 soap nuts inside a cloth bag (or an old sock, for example) and put the bag into the washing machine among the laundry. If you want a fresh scent for your laundry, you can add a couple of drops of essential lavender or orange oil.
If you wash your laundry with soap nuts at 40 degrees, you can use them twice. If you wash the laundry at 60 degrees, the soap nuts are disposable (saponin dissolves completely from the nuts at higher temperatures).