Glycerin
Sorry, this answer is incorrect. Glycerin is not an explosive substance. However, it is used to make nitroglycerin by a process called nitration, where glycerin is slowly mixed with nitric and surlfuric acid. Glycerin is also a byproduct of soap making. While it is removed from industrially produced soaps to use it for more lucrative care products like lotions and creams, glycerin is found in handmade soaps. It is a humectant, a substance that attracts moisture. In cosmetic products it attracts moisture out of the air onto your skin.