Water
Scrubbing Bubbles Toilet Cleaning Gel is composed of 30 to 60 percent water, according to U.S. Department of Health & Human Services. Water is used to put other ingredients into solution and to keep the compound in gel form.
Surfactants
Surfactants are compounds that are used to bond with dirt and oil and suspend them so they can be removed. Surfactants have a "hydrophilic" (water-loving) end and a "hydrophobic" (water-hating) end. The water-loving end helps to wet the surface for the removal of dirt, and the water-hating end bonds with the dirt and keeps it in a form that allows it to be washed away effectively. Surfactants can be toxic or non-toxic. Those made from plant materials are considered non-toxic. Sodium laureth sulfate, one of the ingredients in Scrubbing Bubbles Toilet Cleaning Gel, is considered toxic because it should not be ingested and it is an irritant to eyes and skin, according to Snopes.com. Beheneth 30 is another surfactant in the product not considered toxic. This product contains 20 to 30 percent of surfactants. Scrubbing Bubbles contains 10 to 30 percent of C10-C16 and C16-C18 ethoxylated alcohols, another type of surfactant that is toxic to aquatic organisms.
Glycerin
Scrubbing Bubbles Toilet Cleaning Gel contains 1 to 5 percent glycerin. Glycerin is a compound used in many cosmetics and cleaning products. It has an ability to attract moisture. Glycerin is a byproduct of the soapmaking process and is used to moisturize and keep products from dying out. It is non-toxic to humans, according to ScienceJRank.org.
White MIneral Oil
White mineral oil is used as a stabilizer for other ingredients in cleaning products, cosmetics and pharmaceuticals. It is a purified form of paraffin oil that is non-toxic, but should not be inhaled or left in contact with skin, eyes or clothing.
Dyes
Dyes are added to cleaning products to make them more attractive to use. Scrubbing Bubbles Toilet Cleaning Gel contains Acid Blue 9 dye, diammonium salt, is used in many types of products from foods to hair dyes. FD&C #5, or tartrazine, is another dye used in the product which has been associated with asthma and stomach sensitivity, according to the National Institute of Health.