Fill the bucket or sink with cool or tepid water and add a splash or squirt of mild liquid detergent such as a dish detergent or Simple Green.
Turn the sauna suit inside out and immerse the suit in the sink. Gently swirl the suit in the cleaning solution.
Drain the cleaning solution and rinse the sauna suit several times in cool or tepid water.
Hang the sauna suit to drip-dry. When the inside is dry, turn the suit right-side out to completely dry all surfaces.