Ah yes, PEG-40 Hydrogenated Castor Oil. The kind of name that makes you wonder if chemists are just mashing the keyboard at this point. Spoiler: they’re not. This little multitasker has been hanging around the cosmetic industry longer than TikTok trends last (and honestly, more reliably). Let’s dig into what it is, why it exists, and whether or not you should care. Origins: From Grandma’s Laxative to Your Lip Gloss First, the “castor oil” part. Castor oil comes from the seeds of the castor bean plant (Ricinus communis). Yes, the same plant that produces ricin — the extremely deadly poison featured in like,