How to treat a blister
If the blister has not burst then do not burst it! The top of the blister – called the roof – protects the sensitive skin underneath and it should not be removed. The blister will usually heal quite quickly on its own, absorbing the fluid back into the skin and repairing the skin. Keeping the roof of the blister intact also reduces the risk of infection as a blister that has not burst is sterile inside.
Sometimes a healthcare professional will need to burst the blister but this will be done professionally and in clean conditions and should not be attempted at home.
Whether the blister has burst or not, the best steps to take are to protect it (from pain, damage, and infection) and provide it with the best possible conditions for healing.
To protect the blister, cover it with a dressing that will help to reduce friction and act as a barrier. Some dressings will include a soft cushioning pad for further protection. Antiseptic sprays or creams may help protect blisters from becoming infected.
To help the blister heal a wound healing dressing could be used – this is one that provides the ideal conditions to help it heal.