What Are Blister Plasters?

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  • Written By: Jennifer Long
  • Edited By: Heather Bailey
  • Last Modified Date: 05 January 2019
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Blister plasters are a dual-use application designed for blisters. They can be used for protecting blister-prone areas, known as hot spots or friction zones. A blister plaster can also be used for treating blisters that have already appeared.

Also known as hydrocolloid plasters, blister plasters contain a substance called hydrocolloid. This substance’s chemical properties give the plaster a rubbery appearance that provides cushioning. A blister accumulates fluid that creates a bubble. An added benefit of a blister plaster is that it absorbs moisture that creates the blister and leads to all the pain that is experienced.

Protecting areas that are more prone to developing blisters is one way the plasters are beneficial. For most people, particularly those who are athletic, the feet are riddled with friction zones. The toes, heel, and balls of the feet are common places that could benefit from the protection of plasters. In some cases, people who tend to develop blisters on the hands find that a plaster can help prevent occurrences.

Treating blisters can be difficult. They are painful and too much activity or friction and pressure can cause them to rupture. Ruptured blisters can lead to an infection if left untreated, because bacteria, dirt, and other particles enter the wound. Blister plasters provide a barrier to keep the area clean while also reducing the pain and pressure. With a plaster applied, activities can continue.


Generally, blister plasters are suitable for use anywhere on the body. Most brands are waterproof and they are available in several sizes. The adhesive allows the blister plaster to stick firmly on skin while covering the blister. It should continue covering the blister for as long as possible to promote faster healing. The plaster is designed to keep moisture away so the blisters can heal.

Hospitals have used blister plasters for many years. They have been instrumental in helping burn victims heal quicker. The plaster becomes like another layer of skin, joining to the layer it is attached to. When applied, it creates ideal healing conditions for the blister.

Blister plasters should be applied on clean, dry areas for the best adhesion. They can be warmed between the hands before removing the backing paper to make them easier to work with. A plaster should not be removed too early because this can tear new skin growth. When the blister has healed, the plaster will come off easily, without pain or skin damage.


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Discuss this Article

Post 3

@fify-- I don't know if it's a good idea to put blister plasters on broken skin. I think they're meant for blisters that are intact. If the area is not clean, putting a plaster on it can cause infection.

Post 2

@turquoise-- I agree with you. I also use blister plasters to prevent blisters and I use it on my bunion sometimes too. I know the spots on my feet that are prone to blisters. So before I wear new shoes or sandals, I put a blister plaster there. It really works!

You can also use it on other problem areas like bunions. A blister plaster prevents chaffing on my bunion.

My grandmother also uses these. She has diabetes and circulation problems sometimes give her blisters on her legs and feet. She uses blister plasters to keep them germ-free.

Post 1

I love blister plasters. I always keep some in my purse during summer months because this is when I get blisters the most. I don't know what I would do without them. I love that the plaster prevents the blister from popping. When a blister pops, it always takes twice as long to heal and hurts so much!

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