A system for reduced scarring of wounds； said system comprising: means (1) for creating an enclosed volume (3) over a wound site (2). The system further comprises: means (6, 10, 11, 12) for actively reducing the oxygen concentration within the enclosed volume at the surface of the wound to a first oxygen concentration level while maintaining an environment within the enclosed volume which is healthy for wound healing, means (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14) for ensuring that the oxygen concentration of the gas composition of the gas within the enclosed volume at the surface of the wound is maintained below a second oxygen concentration level and above a third oxygen concentration level, and where said system is arranged such that said first, second and third oxygen concentration levels are between 1 and 16 volume percent.
