That indicates opening up of blood vessels, and not tightening them up. That makes ozone a vasodilator. Many of my patients report a desirable sense of warmth in their tissues after ozone therapy. This is another explanation of the paradox of oxidant ozone serving as antioxidant therapy. By improving tissue blood supply, ozone counters anoxia and oxidosis.
Ozone is useless for viral infections.
Ozone is an effective antiviral therapy. When using that argument, they seem not to be troubled by the fact that there they reverse themselves and speak against their laboratory findings. Taken at its face value, that makes ozone useless for viral infections. That makes ozone an effective antiviral agent. Of course, drug doctors consider it beneath their dignity to study the clinical histories of patients of ozone therapists.