From Ryanair.
Any containers larger than 100ml (excluding essential medicines, see section below) will NOT be allowed through the security search point. Most liquids of any amount may still be carried in hold baggage.
One lighter per person may be carried through security. Lighters form part of the allowance of liquid in the litre bag and can either be placed inside the litre bag or screened separately provided they would fit into the bag.
Remember that 'Liquids' includes:
All drinks, including water, soup, syrups
Creams, lotions, oils, perfumes, mascara etc
Sprays and pressurized containers including shaving foam and spray deodorants
Pastes, including toothpastes
Gels, including hair and shower gel
Any other solutions and items of similar consistency
Please note that liquids can usually be purchased beyond airport security search points, in the departures area, as these liquids are subject to a separate screening process.