We've all been there....you're as happy as Larry to be jetting off on a relaxing short break only to end up chucking away half your toiletries because you forget about the 100ml rule. When travelling with carry on luggage, all your liquids, toiletries and cosmetics must be 100ml or under to comply with regulations. Have no fear, we've done the maths for you and compiled the essentials that tick the 100ml box below.