The rules for carry-on-sized toiletries in the United States are set by TSA. Toiletry size rules are consistent around the world. The rule for toiletries is ounce bottles or less (by volume) 1 quart-sized, clear, plastic, zip-top bag 1 bag per passenger
Levando tudo na mala-de-mão! My secret weapon: Ziplock Gallon-Sized Baggies! It's amazing how much you can fit in your carry on by putting a couple of items into gallon-sized zip-top baggies and pressing the air out.