Many deodorants contain the ingredient triclosan. Triclosan is an ingredient used as an antibacterial additive to many beauty products, clothing, toys, and furniture to name a few. While triclosan may not have been found to be harmful to humans, some studies have shown that the antibacterial additive can make humans immune to antibiotics. However, triclosan has been proven to harm aquatic animals. This is because the chemical, which has been used as a fertilizer, has been found in rivers, streams, and in sewage sludge, thus contaminating their habitats. A solution to this problem, is replacing products that contain the toxic triclosan with a more organic and natural antibacterial ingredient.