On most modern cruise ships in 2026, you will find a single low-voltage "shaver-only" outlet in the bathroom, typically located near the mirror or inside a medicine cabinet. These outlets are designed for electric razors or toothbrushes and cannot handle high-wattage devices like hair dryers, curling irons, or flat irons. If you attempt to plug a high-heat tool into the bathroom outlet, you will likely trip the circuit breaker for your entire cabin. For safety and fire prevention, cruise lines require that all high-power hair styling tools be used at the desk or vanity area in the main cabin, where the heavy-duty universal power outlets (US and European style) are located. Some of the newest "mega-ships" built in the last few years have begun adding USB charging ports in the bathroom for electronic toothbrushes, but the "no hair dryer in the bathroom" rule remains a global industry standard. Always check your specific ship's cabin guide, but as a rule of thumb, plan to do your hair styling at the desk to avoid a "blackout" in your stateroom.