According to TSA razors are allowed *without* the blades in your carry on. Safety razor blades need to be out of carryons and in checked luggage or purchased at your destination. PLEASE NOTE: As of 12/06/2022 we have seen increased reports of TSA agents confiscating safety razors even if they don't have blades loaded or with them. Ultimately, the decision on what to allow is left in the hands of the TSA agent at that time, so please excercise caution and travel with your Leaf Shave razors in your carry-on at your own risk.