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The 100ml / 3.4oz liquids rule
All liquids, gels, aerosols, pastes, and creams in carry-on must be in containers of 100ml (3.4oz) or less, stored in a single, clear, resealable plastic bag. Some airports now use advanced CT scanners that remove this restriction β check your specific departure airport.
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Security rules change β airports adopt new scanners, governments update regulations. We'll send you an annual update with what's changed.
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Disclaimer: Rules vary by airport and can change without notice. Always check with your airline and the relevant security authority before travelling. When in doubt, pack it in checked baggage. Some airports β particularly major hubs β pilot newer CT scanners with different liquid rules; check your specific departure airport's website if in doubt.