Propylene Glycol Is It Safe?

Our friends over at the Ashtray Blog have a good article today on Propylene Glycol.  This very thorough post covers the current and past research on this chemical that is used in most e-liquids which has come under scrutiny by researchers and scientists.  Although this chemical is approved by the FDA for human consumption, it effects on the lungs when inhaled have not been given a green light.

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