This is from the Air New Zealand web site.
Carriage of Liquids, Aerosols, Pastes and Gels:
Passengers departing New Zealand on international flights must comply with security regulations relating to the carriage of liquids, gels and aerosols in the aircraft cabin.
The measures are:
All liquids, pastes, aerosols or gels such as drinks, creams, perfumes, sprays, gels, toothpaste, lip gloss and mascaras must be in individual containers not greater than 100ml in volume
All containers must be carried in a re-sealable transparent plastic bag no larger than one litre (approximately 20cm x 20cm or 8 inches x 8 inches)
Only one bag is permitted per passenger
The plastic bag must be sealed and presented separately from all other carry-on baggage at the screening point
Liquids in containers of more than 100mls can be packed in your checked in baggage.
There are exemptions for personal medications, baby products and dietary supplements in liquid, paste, aerosol or gel form.