You are allowed to bring a quart-sized bag of liquids, aerosols, gels, creams and pastes in your carry-on bag and through the checkpoint. These are limited to travel-sized containers that are 3.4 ounces (100 milliliters) or less per item.
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Personal lubricant or lube is a liquid or gel that is used to reduce friction and irritation during sexual activity.
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.
You may bring liquids, aerosols, and gels in your cabin luggage as long as they do not exceed a maximum volume of 100ml for each item, carried in one resealable, transparent plastic bag no more than 1-litre in capacity per passenger. See below for details.
A small toiletry bag will work well. When packing lube packets, it's important to double-check that the packets are sealed. You don't want any of the lube to leak out and ruin your other belongings. It's also a good idea to pack the lube packets separately from other liquids, such as shampoo or perfume.
If you are traveling with multiple condoms for a trip to Cancun, it is advisable to spread them out across your bags to avoid arousing suspicion. Be aware that any kind of lubricant, even if it's inside a condom package, will be considered a liquid and must be placed in a resealable bag for inspection.
Liquid or gel food items larger than 3.4 oz are not allowed in carry-on bags and should be placed in your checked bags if possible. TSA officers may instruct travelers to separate items from carry-on bags such as foods, powders, and any materials that can clutter bags and obstruct clear images on the X-ray machine.
London City Airport has scrapped the 100ml liquid limit by using high-tech scanners which also allow electronics to be kept in hand luggage at security.
Please note that current UK aviation security regulations forbid the carriage of liquids (including aerosols and gels) in hand baggage through the passenger security point in containers larger than 100ml.
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.
We recommend packing all liquids, gels, and aerosols that are over 3.4 oz or 100 ml in your checked baggage, even if they are in a secure, tamper-evident bag. Liquids more than 3.4 oz or 100 ml not in a secure, tamper-evident bag must be packed in checked baggage.
Safety Razors: Because the razor blades are so easy to remove, safety razors are not permitted in your carry-on luggage with the blade. They're fine to pack in your carry-on without the blade. The blades must be stored in your checked luggage. The same applies for straight razors.