I've never taken a liquid on an airplane. Ever. For any given travel, I tend to stay in one of two types of places: hotels, or the homes of people I know. Both types of place tend to have toiletries I can use once I'm there, or I buy a small bottle of whatever. I'm just gonna forget whatever it was I brought while I'm traveling anyway, then wish I still had it once I get home, so why bother, you know?
Carry-on baggage doesn't get lost, is all I'm sayin'.