So, here's the deal. The TSA says that any liquids, gels, or aerosols you bring in your carry-on bag have to be in a quart-sized zip-top bag. That's right, folks, quart-sized. Not gallon-sized, not pint-sized, but quart-sized. And don't even get me started on the whole "zip-top" thing - it's like they're trying to make sure you don't try to sneak anything in.
But what counts as a liquid, you ask? Well, it's not just your average everyday liquids like water and soda. The TSA also considers gels, aerosols, and creams to be liquids. So, if you're planning on bringing your favorite face cream or hair gel, make sure it's in a quart-sized zip-top bag or you'll be in trouble.