Later next month I'll be traveling to Italy for 10 days!!! Normally when I travel for longer that 3 or 4 days I like to take my own shampoo, conditioner, moisturizer, ect. little things like that. However, in the past I arrive at my destination to find many of my products have exploded during the flight. I pack them inside a zip lock bag, but I still hate having to clean up the mess, plus a lot of the product is wasted. So my question is....have any of you disovered a great way to lessen the chances of a "product explosion"? I've tried to squeeze out the excess air, and then screw the top on but it hasn't worked so well.