Irish airports say new restrictions on hand luggage being introduced across the EU today are not causing any major disruption or delay at security checks.
Under the changes, passengers can only carry a maximum of 100mls of perfumes, gels, cosmetics, toothpaste and other liquids on board aircraft.
These items must also be placed in a transparent plastic bag while being carried through security checks.
Items like baby food and medicines are exempt from the rules, but passengers may be asked to taste baby food or produce a doctor's note to show that their medicine in necessary.
The measures are being introduced in response to the arrest of several people in Britain last August on suspicion of plotting to bomb transatlantic airliners with liquid explosives smuggled on board via hand luggage.