What's The Right Amount of Laundry Soap to Use?

Most of us use waaaaaayy too much laundry detergent on our clothes. We just slug a bit into the machine and hope for the best. It's a waste of money and terrible for your clothes (not to mention the environment).
We've got a better idea.
The Right Tools:
This sustainable cup takes the guesswork out of everything. We made it for measuring our Everything Laundry Soap, but this handy little cup is the perfect size for sterilising makeup tools, your derma roller, dosing out medicine (or measuring gin for the perfect martini). Made from durable, high-fire porcelain, you'll wonder how you ever lived without one.
Microwave and Dishwasher Safe.
Directions: Measure liquid to cover the corresponding line. Use a soiled garment just prior to laundering to wipe the inside of the cup clean after each use. Clever!