gene gun using, high-pressure nitrogen to jet nutrients into the skin inside, high-pressure nitrogen can enough to accelerate blood circulation and increase the metabolism of skin cells, thus improving the skin's ability to absorb nutrients. the gene gun uses high-pressure nitrogen to jet nutrients into the inner skin, which is very penetrating and can penetrate deep into the skin layer and reach the subcutaneous tissues, thus achieving better cosmetic results. the gene gun adopts on-invasive technology, which does not require operations such as injections and skin cuts, and does not cause any harm to the skin, making it extremely safe..syi