Can the ozone layer repair itself?

You could say that ozone "repairs" itself every day during daylight hours because its concentration varies throughout the day, presumably because it is generated by the action of ultra-violet light on oxygen molecules. The long-term average of ozone is primarily dependent on the long-term average intensity of ultra-violet from the Sun, and it rises and falls in accordance with that intensity.

Scientists initially believed that aerosol chemicals were the root of the issue because they degraded ozone more quickly than it could be created, but new research indicates that the ozone layer is not only capable of self-repairing, but has already restored 1% of it.

Yes, the ozone layer can repair itself naturally through a process called ozone depletion and ozone production. Ozone molecules are continuously formed and destroyed in the stratosphere due to natural processes. However, the rate of ozone destruction has increased due to human activities, particularly the release of chlorofluorocarbons (CFCs) and other ozone-depleting substances. Despite this, efforts to reduce these substances have led to signs of recovery in the ozone layer, particularly over Antarctica where the ozone hole forms. It is expected that with continued efforts to reduce ozone-depleting substances, the ozone layer will gradually repair itself over the coming decades.