"Caustic agents" refers to substances or chemicals that are very harmful and can cause damage or injury when they come into contact with living organisms or other materials. Full definition
This potassium hydroxide acts as a caustic agent which turns the coconut oil in the soap to a wonderful soap. (babieslounge.com)
But did you know that these chemicals are central nervous system disruptors, known carcinogens linked to cancer and birth defects, and caustic agents that can burn skin and cause blindness? (thetinatimes.com)
Common causes of oral trauma are oral fractures, accidental exposure to caustic agents, foreign material, and burns, (usually caused by chewing electric cords) (petfriendlyhouse.com)