What is a band aid used for?

Answer 1

A) It keeps germs out of wound, by fitting tightly over a wound

B) it helps to speed up healing of a wound, as it's pad is medicated

C) It helps to prevent scabs forming, which often re-open a nearly-healed wound.

D) It stops people from picking at their cuts and grazes, slowing down the healing process.

Answer 2

If you are asking what the technology is behind them, they are composed of a polyurethane gel that slowly absorbs fluids, so that a scab does not form over the wound. The gel pad functions like a scab in terms of keeping out dirt and bacteria, but since it does not create a hard edge like a natural scab does, the skin cells can generate more quickly and merge together with less scarring.

Many other companies now use the same technology, including store brands like CVS and Walgreens.

The clearest explanation I've found is at this site for an alternative brand called Elastoplast:

http://www.en.elastoplast.ca/advice/faq/fast-healing.html

There are more technical discussions at some sites aimed at medical professionals:

http://www.healthline.com/galecontent/bandages-and-dressings

http://www.en.elastoplast.ca/advice/faq/fast-healing.html

If you were instead asking how WELL do they work, rather than HOW do they work, just search on "advanced healing bandage reviews".

Answer 3

Usually to protect cuts/grazes, to stop them from becoming infected.

Answer 4

Its basic use is to cover an open cut or wound and prevent dirt and bacteria from causing an infection. It also helps to stem the slight blood seepage that may come from a shallow cut.