Comedogenicity: It is the term used to describe how likely an ingredient or product will clog your pores. The internet will find several charts that list several products level of comedogenicity. A high rating of comedogenicity doesn’t necessarily mean the product will irritate the face or cause acne. However, acne prone skin chances have an increased chance that acne will occur or become worse.
Sodium Lauryl Sulfate: A mixture of sulfuric acid, monododecyl ester, and sodium salt that is the detergent in everyday products. In extremely high heat and its natural state the chemical compound will produce a toxic fume.
Isopropyl Myristate: A manufactured oil that is created by condensing myristic acid with isopropyl alcohol. It is used as an emollient, lubricant, and to help get rid of head lice. It is easily absorbed by the skin, decreases the greasy feeling of products, and helps skin products to penetrate the skin. It may create a breakout of acne.
More definitions for other ingredients can be read in the ever expanding glossary.