EDTA is also a penetration enhancer – it breaks down skin’s protective barrier, making it easier for other potentially harmful ingredients in the formula to sink deeper into your tissues and perhaps even into your bloodstream.
Prolonged skin exposure has caused irritation, possibly due to its dehydrating effect on the skin, despite being used in skin care products that advertise to do the opposite. PPG can also cause an allergic response on contact with the skin.
Mineral Oil is a colorless and odorless oil that’s made from petroleum—as a by-product of the distillation of petroleum to produce gasoline. It’s long been used as a common ingredient in lotions, creams, ointments, and cosmetics. It’s lightweight and inexpensive, and helps reduce water loss from the skin.
PEGs (polyethylene glycols) are petroleum-based compounds that are widely used in cosmetics as thickeners, solvents, softeners, and moisture-carriers. PEGs are commonly used as cosmetic cream bases. They are also used in pharmaceuticals as laxatives.