Ah, propylene glycol. The silent hero of the cosmetics world, whispering sweet nothings to our dehydrated skin cells, making sure our mascara doesn’t look like a raccoon had a fight with a sprinkler system. This unassuming little compound is so omnipresent that it’s basically the Kevin Bacon of skincare. The cosmetics industry loves it. The skincare community pretends to understand it. And you? You’re probably slathering it on your face right now without even knowing it. Let’s take a moment to appreciate this tiny, unassuming molecular underdog. What Even Is Propylene Glycol? Picture a scientific lab, all bubbling beakers and slightly neurotic