According to the TSA, straight razors and blades for safety razors are not allowed in your carry-on luggage. However, disposable razors, replacement blades, and electric razors can go in either your carry-on or checked baggage. Refillable razor cartridges are allowed in hand luggage, but individual loose razor blades are not. In the UK, fixed-cartridge razor blades, meaning disposable razors, are allowed in carry-on hand luggage because the blades are fixed within the head of the razor, so they can’t be removed. When it comes to straight razors, they are prohibited on flights unless they are securely wrapped and sheathed.

In summary, disposable razors, replacement blades, and electric razors are allowed in both carry-on and checked baggage, while straight razors and blades for safety razors are not allowed in carry-on luggage. Refillable razor cartridges are allowed in hand luggage, but individual loose razor blades are not.