where does the water come from in a blister
Blister Friction blisters are caused by excess shear stress between the surface of the skin and the body. The strata of skin around the Stratum spinosum are most susceptible to shear. As the Stratum spinosum tears away from the connecting tissues below, plasma from the cells diffuses out. This plasma solution helps new cells divide and grow into new connective tissues and epidermal layers.