User blog comment:RaijinRising/Ozpin and the Color Naming Rule/@comment-27087951-20151110023852/@comment-4010415-20151127062615

When Jaune's Aura healed his scratch, Pyrrha's response was "You have a lot of it", directly after the scratch healed. It's possible that, in large and powerful amounts, Aura can have healing properties, at least enough to heal minor wounds.

Ozpin's Aura might be exponentially more powerful than that, allowing him to have more regenerative abilities than that.