Current TSA regulations allow liquids, aerosols, gels, creams and pastes that are under 3.4 oz.and 100 ml to be carried through TSA security checkpoints. These items must be packed in 1 quart-sized, resealable bag and each passenger is limited to 1 bag.
TSA considers tweezers to be completely safe, so they're allowed on planes. You can pack tweezers in hand or checked baggage without any packing restrictions. But TSA doesn't allow packing sharp objects in hand baggage because some of them could be used as potential weapons.
You must place liquids into individual 100 ml containers and remember that, in most cases, security won't accept larger containers, even if only partly full.
No more rummaging in your bag: London City Airport scraps 100ml liquid rule. LONDON, April 4 (Reuters) - There will be no more rummaging in the bottom of your bag for a forgotten hand cream or water bottle at London City Airport after it became the first of the capital's hubs to scrap the 100ml liquid limit rule.
However, when packed in carry-on bags, makeup in a liquid, lotion, gel, paste or creamy form, must be in containers that are 3.4 ounces or less. You can take as many travel-sized liquids as you can comfortably fit into one quart-sized, zip-top bag. One liquids bag is allowed per passenger in carry-on bags.
Are Ziploc bags allowed in carry-on luggage on planes? Yes. I always put anything liquid or soft/moist (toothpaste, for example), in a ziplock bag to prevent staining of my clothes by an accidental leak. I use quart bags since that is a TSI requirement.
Toothpaste is considered a liquid by the TSA (Transport Security Agency), even though it's technically a paste. In fact, all pastes, gels, waxes, and lotions are also classified as liquids. And even today, these substances are still restricted by the 3-1-1 rule in hand luggage due to safety threats.
Firearms, ammunition, and fireworks are prohibited, as are all knives and safety razors (including pocket knives and Swiss Army knives). Straight razors and replacement blades for straight razors are also not allowed. Most tools also cannot be packed in carry-on luggage, as they have the potential to cause harm.