This is a new environmentally friendly product developed using physical principles. It requires no detergent. Just using with air and water is enough. Easy to Use - Rubbing hands over the bar for 30 seconds under running water. Keep running water over it when rubbing it on your hands. Then it removes all odors away. Working Principle - Ingredients such as onion, garlic and fish give off sulfur that causes the odor to stain your hands. The stainless steel would react with the sulfur to remove the odor. That is the positive charged released ions of stainless steel combine with odor molecules to achieve the effect of removing odor. Great for removing any odors from your hands like onions, fish, or garlic. Make the unwanted odor disappear Tips: it cannot remove oil, only odor Other applications: Put the soap in a container, half in the water, or wrap the soap in a damp cloth to put it in the kitchen, bathroom, car, refrigerator, renovated room, and pet's nest. It must be used with water or a damp cloth.