Airport security regulations state that you're only allowed to carry small amounts of liquids in your hand luggage. Liquids make up part of your 1-bag hand luggage allowance. You'll need to pack them in containers of no more than 100ml - 3.5fluid Oz and carry them in a clear, resealable plastic bag up to a maximum size of 20cm x 20cm - 8 inches x 8 inches, or that can hold up to 1 litre. Any liquids in containers bigger than this need to be packed in your checked-in luggage. How to pack your liquids: Make sure the containers fit comfortably in the bag and that the bag is completely closed. You'll need to ensure the containers are easily visible, too. You'll need to provide the plastic bag yourself. At most airports they're also available to buy before you go through security. Each person travelling - including infants - can carry 1 plastic bag for liquids. What 'liquids' means: Examples of liquids that you should pack as above include: - Water and drinks, soups or syrups - Creams, lotions and oil - Perfume - Sprays - Gels - including hair and shower gels - Shaving foam, other foams, deodorants and anything in pressurised containers - Pastes, like toothpaste - Liquid-solid mixtures - Mascara - Any other items that have a similar consistency. Medical and dietary liquids: You'll be able to carry medical and dietary liquids over 100ml, but you'll need to bring a doctor's letter to show at security. Any liquids you buy from duty free must be carried in a sealed security bag - you'll be given this bag when you buy the item at the airport. You'll need to keep the item and the receipt sealed in the security bag throughout the journey. Just so you know, security officers might need to open the bag to screen the item. If you're going to be connecting with another flight at your destination airport, let the security officer know and they'll reseal it in a new security bag. While UK airports are installing new scanners to prepare for changes in security restrictions, at this time you should still follow current guidelines as not all airports have changed* and destination airports still have these restrictions in place for your flight home. Check government hand luggage restrictions at UK airports and at Irish airports for more details about medical and dietary exceptions. *We recommend you check your departure airport website for their most up-to-date security advice.