“Cordless hair straighteners that contain lithium metal or lithium ion batteries or are gas or butane fueled are only allowed in carry-on bags,” a notice on the TSA website states. “A safety cover must be securely fitted over the heating element. The device must be protected from accidental activation.”

Certain beauty products now have stricter regulations, according to the Code of Federal Regulations. Here's what travelers should know.

TheStreet reported a new ban on these items in checked luggage: cordless curling irons or flatirons containing gas cartridges; butane-filled curling irons and flatirons and gas refill cartridges for these tools. If TSA agents find these items, they may be confiscated.