Dermatological method and device

A flexible surgical plaster for promoting healing of skin injuries and scars, the surgical plaster comprising:

• a flexible base layer having a window, the base layer being flexibly attachable to skin surface surrounding a skin injury or scar such that the window is flexibly and substantially permanently placed onto the skin surface above the skin injury or scar and exposes the skin injury or scar to light when the base layer is attached to the skin surface;
• and
• a flexible translucent light-polarizing foil placed in the window of the base layer such that the light-polarizing foil is flexibly and substantially permanently placed onto the skin surface above the skin injury or scar when the base layer is attached to the skin surface, wherein the light-polarizing foil transforms ambient light received by the light-polarizing foil into polarized light and transmits the polarized light through the window to the skin injury or scar in order to promote healing of the skin injury or scar when the base layer is attached to the skin.