Change wet dressings
Though some physicians say you can leave a dressing on for two days without worry, all agree that is a dressing becomes wet for any reason, you can consider it contaminated and it should be changed. That means you may need to change it quite often if your feet perspire heavily or you engage in activities that will lead to sweating and damp dressings.

Preventing them
Preventing is always the best option, so here is what experts recommend to keep blisters from developing in the first place.

Try a heel lift
Blisters that appear on the back of the foot usually result from the shoe’s heel counter hitting the back of the heel in the wrong area. All you usually have to do is put in a heel lift at the back of the shoe.

Keep your socks on
One of the fashion we are seeing is people going without socks. The people who do this suffer blisters on the back of their heels all the time. It is recommended to use footie type socks that only go around the foot area

Powder daily.
Powder should be everybody’s friend, make powdering your feet part of a daily routine. When people have blisters with shoes that fit, they can start off by applying baby powder to their feet before putting on their socks. This helps the sock glide over the foot a little more and prevent blisters.

Coat to protect.
If you are planning a long walk, run, tennis match or whatever, one way to guard against blistered feet in new shoes is to coat blister prone areas with petroleum jelly, that will cut down on friction

The new socks for new shoes
If you have got a new pair of shoes that are rubbing up blisters, the first thing to do is change to different socks. Acrylic socks is recommended because they are made in layers that are designed to absorb friction so your foot does not

Treat your feet to treated insoles.
Experts agree that many of the products made by Spenco are excellent for preventing blisters, one of the best is a chemically treated insole that is bubbled in nitrogen. What that does is add some cushioning to the bottom of the foot and help it glide over the bottom of the shoe better, instead of sticking in places and causing a blister.

Toughen with tannic acid,.
Studies have shown that applying 10 percent tannic acid to vulnerable areas of the skin twice a daily for two to three weeks makes the skin tough and less prone to blisters. If you are a hard core athlete or distance runner, you can use something like that.