Scientists have announced that the hole in the ozone is recovering.
Research published in Science magazine shows that moves to control ozone-depleting chemicals have paid off.
In 1987, most countries in the world signed up to the Montreal Protocol in a concerted effort to ban the use of CFCs and repair the ozone hole.
It seems that the restrictions placed on ozone-depleting substances was starting to take effect.
New Zealand was the world leader in occurrence of certain types of skin cancer because many people were of European descent and were genetically programmed for much lower levels of UV.
Scientists warned that the ozone recovery would be minimal over New Zealand and people would still need to be cautious in the sun.
CFCs are found in common household items like older refrigerators, old car air-conditioning systems as well as industrial air and refrigeration systems.
They also used to be in everyday products like aerosols.