This statement has no scientific basis.

Soy sauce is a food made from fermented soy products. Vinegar is made from fermented glutinous rice, sorghum, rice, corn, wheat, sugar and alcohol. The main ingredients are amino acids. The substance that makes skin or scars darken is melanin. Melanin is secreted by melanocytes present in the epidermis, and amino acids do not produce this substance. Even if food coloring is absorbed by the body, it will not be transported to the skin by the body. Eating soy sauce and vinegar will not darken the skin of our wounds at all.

Whether the wound heals well and whether it will leave scars mainly depends on the size of the wound, the degree of infection, whether the debridement and sutures during the treatment are done well, whether the anti-infection is in place, and the nutritional status of the human body. . As for the darkening of the skin at the wound, it is mainly due to the activation of tyrosinase activity after the skin cells are damaged, resulting in the production of melanin, making the skin look a little darker. But as skin cells gradually repair, melanin will slowly break down until it disappears.

Extended information:

When there is inflammation in the skin, in order to resist the invasion of external microorganisms such as bacteria, our body will release some inflammatory mediators locally to activate local immunity. These inflammatory mediators stimulate melanocytes and can lead to localized pigmentation. Therefore, even if we do not eat jealousy and soy sauce at all, if the wound heals slowly, it is still possible to leave pigmentation. Therefore, try to avoid wound inflammation, so that the scar will be less likely to turn black after healing.

Foods that need to be eaten to promote wound healing:

1. Pig’s trotters. Pig’s trotters are rich in zinc and collagen. Zinc deficiency will reduce the function of fibroblasts, and supplementing more collagen can promote the speed of wound healing.

2. Bitter melon. Bitter melon juice contains protein components similar to quinine, which can enhance the phagocytosis ability of macrophages. At the same time, the bitter melon and bitter elements in bitter melon can increase appetite, strengthen the spleen and appetizer, and are beneficial to wounds. recover.

3. Tomatoes, tomatoes can prevent blood clots. The yellow gelatinous substance around tomato seeds can prevent the coagulation of platelets in the blood; it is also rich in vitamin C, lycopene, carotene and other antioxidant ingredients, which are good for Wound healing is beneficial.

4. Rainbow trout, this fish has tender meat, delicious taste, no small thorns, no fishy smell, high protein and low fat. It is an excellent food for promoting wound healing.

5. Kelp. The protein and carbohydrates contained in kelp are several to dozens of times that of spinach. The sodium alginate in kelp also has hemostatic effect on arterial bleeding.

Reference: People's Daily Online - Will eating soy sauce make skin wounds darker?

Baidu Encyclopedia-Vinegar