So, what's the magic formula for carry-on liquids? It's called the 3-1-1 rule: 3.4 ounces or less per container, in a clear 1-quart zip-top bag, with only 1 bag per passenger. Got it? It's not rocket science, but it does require some planning ahead (don't try to sneak in that huge conditioner bottle, you'll get busted)!
But here's the thing: some items are exempt from the 3-1-1 rule, like medications, baby formula, and breathe mists (yes, that's a thing!). You'll just need to declare them at security and be prepared to show documentation (so, don't even think about trying to sneak in that extra bottle of water)!
The TSA Liquids Rule for Carry-on Bags (3.4 ounces)