The depletion could be reduced by curing CFC's. They cause damage to the ozone.
The formation of depletion layer of ozone is due to human made ODS. They react with the ozone layer and then deplete it.
There are steps to preserve Depletion of ozone. Planting trees, using HCFC's, avoiding dumping etc.
The main disadvantage is the UV entering the earth. It causes various fatal problems.
The chemical mainly responsible for ozone deplation are CFC's. They contain chlorine and fluorine which react with ozone to destroy it.
The pollution of ozone layer is cause by CFC's. They reduce the amount of ozone in the atmosphere.
To reduce the depletion, curb CFC's. they react and deplete ozone.
there is just over 75% of the ozone layer left!
In order to reduce the ozone layer depletion we can minimize the use of products containing CFC's. These are deodorants, spray cans, refrigerators etc.
See "What can we do to protect the ozone layer?"
To help the ozone layer, we can reduce our use of harmful chemicals like CFCs, use eco-friendly products, and support policies that protect the ozone layer.
To reduce ozone levels, we must:Plant more treesAvoid using CFC's.
Ozone in the ozone layer is not at all a pollutant but it is something without which no ozone layer may have existed. Ozone can be considered as a pollutant in the stratospheric region but in the stratosphere or the ozone layer it is of full or complete use. No harms there.