We use only the highest quality for our foam. It’s bio-degradable, non-staining, non-toxic and hypoallergenic. It’s also safe for babies, pets, the environment including lawns and gardens. Our foam is made up of Sodium Lauryl Sulfate, Glycerol & Water. These are also the main ingredient used in things like shampoo, dish soap, and even toothpaste but without the additional checmicals and perfumes. The US. Food and Drug Administration (FDA) includes SLS on its list of multipurpose additives allowed as a direct food additive. For more information on SLS please visit https://www.chemicalsafetyfacts.org/sodium-lauryl-sulfate Gylcerol, sometimes referred to as glycerin, is sugar alcohol widely used in a variety of personal care products, including toothpaste, hair conditioner, cosmetics, and moisturizers. FDA has approved glycerol for use as an additive to food packaging materials. For more information on Glycerol please visit https://www.chemicalsafetyfacts.org/glycerol