BAND-AID Brand HYDRO SEAL All Purpose Bandages help keep germs out and your bodys natural healing power in using hydrocolloid technology. Within 24 hours of application, a white bubble will form under the bandage which shows that the healing process has begun. These waterproof bandages provide advanced wound care and cushion to help protect blisters. Cushioning provides protection and relief from painful blisters and wounds. These bandages deliver multiday protection and stay on even through hand washing and showers. Ideal for use on chest, arms, legs and all other parts of the body.