Unlike almost all other organs, the skin has the unique ability to repair itself.
Even large wounds can often heal without forming scars. The white blood cells of the immune system cause inflammation, which ultimately has a healing effect.
Inflammation promotes natural healing
10 minutes - solidification
The healing process of the skin starts when the damaged blood vessels (red dots) contract. The protein fibrin (blue stripes) is released and causes the blood to clot and the bleeding to stop.
48 hours - late inflammation
So-called neutrophil granulocytes (dark purple) trigger inflammation, and macrophages (light purple 'flowers') excrete biochemical substances that signal that the wound must close.
72 hours - growth phase
Fibroblasts (blue), which form collagen (white stripes), and keratinocytes (purple chain on the skin) pull to the wound and restore the dermis and its fine blood vessels.
Weeks to months - ripening phase
The maturation phase starts after the so-called growth phase. The temporary solutions are relieved by sustainable repairs.