8 Toxic Ingredients You Should Never Use in Your Skin Care Routine

The chemical ingredient: Polyethylene glycol

Explanation: "Polyethylene glycol (or PEG) is actually a class of ingredients that can emulsify a formula and enhance the penetration of other ingredients into the skin. They can often be contaminated with impurities like ethylene oxide (used in mustard gas manufacturing) and heavy metals."

The natural option: Cetearyl olivate

Why it works: "Fatty acids from olives give this emulsifier deeply hydrating properties, helping to smooth skin. It also gives the products it's in a silky texture."