Put your Ruby Cup inside the Ruby Clean, fill with water until it’s about ¾ full and place it in the microwave. Make sure you do not close the lid completely as that will increase the pressure from the boiling water and can make it overflow.
Set the microwave time to approximately 3 minutes or enough time to bring the water to a boil and to leave it boiling for a few minutes.
Grab it by the handles when you remove it from the microwave.
Let the water cool down a bit before you empty it and take out your Ruby Cup.
You can also use your Ruby Clean to sterilize your menstrual cup in an oven.
Just preheat the oven and ensure water comes to a boil.
Please make sure your Ruby Clean is completely dry before storage.
Don't store your Ruby Cup in the Ruby Clean. Store it in the organic cotton bag that came with your Ruby Cup. The cotton material ensures a breathable environment for the cup, so any moist on the cup can evaporate.