Immediate Steps: Stop the Burning
As long as the bleach is in contact with the skin, it will continue to burn the victim. Remove any clothing or personal items with bleach on them. If any clothing must be pulled over the head to remove, cut it off to minimize further exposure. Rinse the area affected by the bleach under cold running water for at least 20 minutes. A clean, wet washcloth can be applied to relieve pain. In between use of the wet cloth, keep the burn covered with a loose sterile bandage.
If the bleach is in the eyes, rinse the eyes with running water for at least twenty minutes. It is important for the victims' eyes to be open during the washing so that all the bleach can be flushed out, and both lids should be lifted periodically.
If bleach has entered the mouth or there is any chance that some has been swallowed, contact a poison control center immediately. Do not induce vomiting or give the victim anything to eat or drink.
Thorough rinsing is especially important if the bleach has burned a moist area of the skin such as a mucous membrane because the chlorine combines with moisture to form hydrochloric acid, which can damage skin even further. (Hydrochloric acid does not become a problem if the bleach contacts running water.)