Let's face it, the longer you've lived, the harder it is to keep up with what the current TSA requirements and rules are. The rules change often and some of them can be pretty confusing overall. Some things that would seem only obviously need to be checked, can surprisingly be brought  right on  board, while other items you might think are ok, are strictly forbidden. Let's dive in to 5 of the most often confused TSA rules, and get to the bottom of what's allowed and what isn't.

1. You can carry alcohol in your carry-on bag. The TSA allows passengers to bring as many 3.4-ounce bottles of liquid that can fit in one quart-sized clear plastic zip-top bag. Mini bottles of liquor are usually about 1.7 ounces, so if you’ve picked up a few mini souvenir bottles during your trip or want to grab a few mini bottles of your favorite locally available spirits before flying out, don’t worry about fitting them in your checked bag – you can actually carry them on. You can also carry on any alcohol you’ve purchased after the security checkpoint. Just remember that you can’t actually drink it on the plane. You can only drink alcohol that’s been served to you by the airline.
   
   
2. Feel free (and fresh lol) to put deodorant in your carry-on! Stick deodorants of any size are allowed. If you have spray, gel, liquid, cream, pastes or roll-on deodorants, they have to follow the 3.4 ounce rule (so they have to be 3.4 ounces or smaller) and travel in a clear quart-sized bag. Travel sizes of most brands can be found at local retailers like Target and Walmart.
   
   
3. Electric and disposable razors, yes. Straight and safety razors, no. It may come off as obvious but straight and safety razors aren’t allowed in carry-on baggage. These blades must be packed into checked luggage, but the handle part can be in your carry-on. You can take disposable razors and their replacement cartridges in a carry-on, as well as electric razors.
   
   
4. E-cigarettes and Vape Pens should be in your carry-on, not checked luggage. The Federal Aviation Administration (FAA) doesn’t allow lithium batteries in the cargo area of planes because of their potential to overheat and start a fire. Most e-cigarettes have lithium batteries so better to be safe than sorry. Please remember that while these are allowed in your carry-on, these follow the same rules as traditional cigarettes when it comes to usage. They cannot be smoked on the plane, at all, not even in the lavatory, and should only be used in designated smoke lounges in select airports.
   
   
5. Rules about batteries can be a lot to digest and super confusing. To keep it simple, TSA recommends packing all types of batteries in carry-on luggage whenever possible. Keep in mind that there are also some types of batteries that are completely prohibited unless they’re being used to power a scooter or wheelchair. So if you're not sure about which batteries are ok, check out TSA’s battery tips.