Wound healing is the inherent action that takes place where the skin or any organ repairs itself. Our skin in its normal form creates a protective barrier to protect us from the external environment. When this barrier gets damaged or fragmented the wound healing process automatically and immediately gets set in motion. 

This healing process is divided into four phases:

Phase 1: Hemostasis

Stopping the bleeding. When you get a cut, you normally start to bleed and in seconds blood cells clump together and clot to protect the wound. A blood cell called a platelet forms this clot into a dry scab. 

Phase 2: Inflammation

In this phase, a white blood cell called the macrophage acts as the wound protector and helps the wound fight infection. When the wound is closed by the clot it allows the blood vessels to breath and allow nutrients and oxygen to the wound for healing. Another interesting feature of the macrophage is that it produces growth factors to help in the healing of the wound. 

Phase 3: Growth and Proliferative

Now that the wound has passed the second phase it is time for it to start rebuilding. New tissue is created by oxygen-rich red blood cells. Elastic tissues called collagen are produced around the wound and helps to repair the skin and tissues. 

Phase 4: Strengthening

Although the wound is closed and looks like its repaired it is still busy healing and in the final phase of completing the process. During this stage you might experience itchiness, tingling sensation or tightness which signals that your body is still working on strengthening that area.