Hydrogen peroxide can be rubbed on the abscess of a frozen wart. Hydrogen peroxide’s strong oxidizing effect can kill bacteria, can be used for wound cleaning, for blood clots and other necrotic tissue removal has a promotion effect. If you have pus after freezing warts, you can rub hydrogen peroxide to prevent infection and help your condition recover. If the pus is large after freezing warts, you can use a disposable syringe to suck out the pus and then use hydrogen peroxide to clean the area. Hydrogen peroxide may also have some adverse reactions, and if the concentration is too high it can cause burns to the skin and mucous membranes. Hydrogen peroxide is recommended to be used under the guidance of a doctor, and should not be used blindly on its own to avoid adverse effects.