How often should a band-aid be changed?

There is no fixed schedule for changing adhesive bandages; the frequency should be adjusted based on the wound condition and usage circumstances. Generally, it is recommended to change them every 1–2 days. However, if there is wound exudate, contamination, or moisture, the bandage should be replaced promptly to avoid impairing healing. Specific details are as follows:

The wound's condition is the key factor in determining when to change the bandage. For small wounds that are clean, dry, and without exudate, an adhesive bandage effectively protects the wound from external contamination, and changing it every 1–2 days is sufficient. Changing it too frequently may disrupt the healing environment at the wound surface. If the wound produces exudate, the moisture can dampen the bandage and promote bacterial growth, so it should be changed before the exudate fully soaks through—possibly requiring multiple changes per day. If the wound comes into contact with contaminated water, dust, or other pollutants, or if the edges of the bandage loosen and allow contaminants to enter, it should also be replaced immediately.

When changing the bandage, ensure cleanliness: gently wipe the skin around the wound with saline solution or clean water, check for signs of infection such as redness, swelling, or increased pain, then apply a new bandage, making sure it is not too tight to avoid impairing local blood circulation. Additionally, if the wound has not healed within three days or shows signs of pus, fever, or other complications, discontinue using adhesive bandages and seek medical attention promptly.

During the healing process, maintaining good personal hygiene and avoiding touching the wound with hands can help prevent infection and accelerate recovery.