Does isopropyl rubbing alcohol stop the growth of new skin on a road rash?

Can impede healing: Best thing to do after the initial disinfection with soap or alcohol is to apply petroleum ointment (plain vaseline) at least twice daily until the skin has re-epithelized (about 5-7days). Hydrogen peroxide can be harmful to the healing skin, antibiotic ointments increase the risk of allergic contact dermatitis, alcohol can dry out the wound resulting in a scab which can also slow down healing.