What exactly is hydrogen peroxide?

H2O2. H2o2 - an oxidizing and bleaching agent - used in very concentrated form as a rocket, fuel component, less concentrated for bleaching hair and low concentration 3% for household use.

Related Questions

How exactly does hydrogen peroxide work to heal cuts and infections?

It doesn't. It doesn't heal cuts. In fact, it can delay wound healing. When it's used, it's used to kill bacteria, not to heal wounds.