Do you have a long-haul flight coming up and don’t have time to wash your hair before boarding? Well, the answer to this problem is simple: dry shampoo! But can you bring a dry shampoo on a plane? The short answer is yes – but there are some rules you need to follow. When it comes to packing liquids, aerosols and gels in your carry-on luggage, the Transportation Security Administration (TSA) has very specific regulations. According to their guidelines, any liquid containers must be 3.4 ounces or less and must all fit in one quart-sized plastic bag for screening purposes.…