Science and Technology Daily News (Reporter Zhang Jiaxin) When your skin is exposed to sunlight or environmental toxins, is there a skincare cream that can cure the damage caused by exposure? According to a study published on November 2nd in the journal Nature, NPJ Regenerative Medicine, scientists at Northwestern University in the United States have recently developed an artificial biomimetic melanin that can mimic natural melanin in human skin and be applied locally to injured skin to accelerate wound healing. Free radicals are produced by skin damage such as sunburn, aging, environmental pollution, etc. If left unchecked, free radical activity can damage cells, ultimately leading to skin aging and skin cancer. The working principle of artificial biomimetic melanin is to eliminate free radicals. The synthetic melanin engineering nanoparticles created by researchers have modified the structure of melanin. Compared to human melanin, every gram of synthetic melanin can eliminate more free radicals, just like "super melanin". It is biocompatible, biodegradable, non-toxic, and transparent when applied to the skin. After being applied to the skin, melanin will stay on the surface of the skin and not be absorbed into the lower layer of the skin, thus protecting the skin from sunlight and repairing skin damaged by sunlight or chemical burns. Researchers tested the effectiveness of synthetic melanin as a sunscreen. It was found that it can eliminate free radicals, protect the skin, and can also be used locally after skin injury to promote skin healing. In addition, this cream can also be used to treat blisters and open sores. The latest experiment shows that synthetic melanin is non irritating to human skin and can also protect biological tissues from the effects of high-energy radiation. This may become an effective method for treating skin burns caused by radiation exposure, as well as a choice for cancer patients receiving radiation therapy. (New News Agency)