9 Sneaky Ingredients to Watch Out for in Skin Care Products

Propylene glycol is another very common ingredient found in skin care, and generally speaking it's considered safe. However, Dr. Murphy-Rose warns that it is often associated with contact dermatitis. "Further," she adds, "Propylene glycol enhances the penetration of other ingredients into the skin which can make susceptible users more at risk of reactions to those other ingredients. It's a good idea to avoid this ingredient, especially in patients with sensitive skin."

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