Wound fluid – known in medical language as ‘exudate’ – is a characteristic of the acute phase of wound healing. This fluid comes from blood and lymph vessels, transports cell debris and bacteria away, and forms a conducive environment for the immune system. 

Basically, such secretions from the wound are therefore a good sign. But too much can soften the edges of the wound and endanger healing; they also provide a nutritional environment for microorganisms. It is therefore important to absorb excess exudate without drying the wound out. Moisture management is best done using special plasters made of hydrocolloids or alginates.