what is propylene glycol found in
Propylene glycol is an ingredient found in many personal-care products, including shampoos, hair conditioners, and leave-in styling products.It is widely used because of its relatively low cost and versatile nature. It can be used as an emulsifier or co-surfactant. 2  It is used as a solvent for pigments in cosmetics. 3  It can be used as a preservative due to its anti-fungal and anti-microbial properties. 4  It is frequently used in deodorants and antiperspirants.