The colour and consistency of blister fluid can range from thin and colourless, to a thick stringy yellow, to all shades of pink, red, dark purple and also black. Each colour tells you something specific about your blister. So, in this article, you’ll discover what’s inside your blister to make it looks the way it looks. And what it all means.
1) COLOURLESS BLISTER FLUID – Plasma
Normal “healthy” blisters have a thin colourless liquid in them. This normal blister fluid is similar to plasma but has a lower protein level. Plasma is basically blood without the red blood cells. In fact, it’s mostly water, which is why blisters normally have no colour.
When there’s a bit more pin-point pressure involved in the blister injury, blood vessels slightly deeper to the normal blister can be damaged. As a result, blood enter the blister and mixes with the normal fluid. The more blood that enters, the more red it will be. After that, as the days go by and the blood dries, the colour gets darker and turns to a dark purple or even black colour.
4) BLACK – Dry Blood
Black blisters indicate that the blood in your blister has completely dried. It won’t be a fluid any more – it will have a fine and brittle crystalline structure. It will take around 6 weeks for this to work its way to the surface to finally shed away.
You’ll find the tools and instructions you need to do this safely, and painlessly, in our Blister Lance Pack. Click the “view product” button below to learn more about what’s in this blister kit and how to use it.
Sterile Blister Lance Pack
Got a blister that needs popping? Don't use scissors or a sewing needle & get infected. Do it safely with our Sterile Blister Lance Pack.