Propylene glycol works as a humectant and a conditioner. It helps you achieve two things you really want for your skin: Hydration and smoothness. It can be an especially helpful ingredient if you're constantly battling dryness, flaking, or rough texture.
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Bev's Skincare Glossary
Want to know more about the details in the chemistry of skin care?
Here you can look up any topic - sorted alphabetically - and read more about what each ingredient includes and does for your skin.