Yes, you can absolutely bring an electric body trimmer in your hand luggage for both domestic and international flights in 2026. Because the blades are permanently embedded within a protective plastic or metal casing and do not have an exposed, dangerous edge like a straight razor, they are considered safe by the TSA and international security agencies. However, the most critical factor is the power source. If your trimmer uses a rechargeable lithium-ion battery, most airlines actually prefer (and some require) that it be in your carry-on rather than checked baggage due to the rare risk of battery fires. It is a high-priority "pro-tip" to engage the "Travel Lock" feature or place a piece of tape over the power button to prevent it from accidentally turning on and vibrating in the overhead bin. If you carry spare lithium batteries for your trimmer, those must stay in your carry-on; they are strictly prohibited in the cargo hold.