Why does melanin deposit after a bump or injury?

In daily life, bumps and bruises are unavoidable, and the melanin deposits that appear after injuries are often confusing. So, why does melanin deposit after bumps and bruises occur?

What is the reason?

When we are injured, the skin immediately starts a self-protection mechanism, the inflammatory response, which is designed to remove damaged tissue and promote wound healing.

Initial stages of the inflammatory response: Vasodilation causes more blood to flow to the injured area, and hemoglobin breaks down in the skin, releasing iron. These iron elements play a key role in the wound-healing process, but they may also trigger a series of chemical reactions that to the formation and precipitation of melanin.

Skin repair stage: During this stage, fibroblasts begin to proliferate and secrete collagen to fill the wound. However, this process may also be accompanied by abnormal activity of pigment cells. When stimulated, pigment cells increase the production of melanin to help the skin better adapt to the environment. But in some cases, this reaction may be too strong, resulting in excessive deposition of melanin around the wound.

How to relieve it?

1. Keep it clean: After a bump, clean the wound with soap and water in time to prevent bacterial infection and prevent discoloration.

2. Avoid irritation: Avoid rubbing, squeezing, or kneading the damaged area to prevent further damage to the skin and reduce the mark reaction.

3. Use scar care products: After a bump, you can consider using scar care products, such as silicone gel scar dressing or scar gel, which can help the wound heal and recover.

4. Avoid sunlight: Avoid exposure to sunlight, otherwise it will aggravate pigmentation and increase the visibility of scars.

5. Whitening products: You can choose products with effective whitening ingredients such as hydroquinone, vitamin C, arbutin, etc., which can inhibit the production of melanin to varying degrees and weaken the color of melanin deposition.

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Editor: kiki Jia