The fluid contained within a blister, often clear or slightly yellowish, is known as serum. It is a component of blood plasma and is essentially filtered fluid that leaks into the space between skin layers as a result of friction, burns, or other forms of trauma. This fluid serves a protective function, cushioning the damaged tissue and facilitating the healing process.
The serum found in blisters is primarily composed of water, electrolytes, proteins, and antibodies. These components play a vital role in the body’s natural healing mechanisms. The fluid’s composition helps to maintain a moist environment conducive to cell regeneration and prevents infection by providing a barrier against external contaminants. However, the presence of potential contaminants within the blister, whether from the skin’s surface or introduced through a break in the blister’s integrity, raises concerns about safety.
