SOD of Luxury repair Eye Moisturizer is an enzyme that scavenges oxygen free radicals in the human body, which can catalyze the disproportionation of free radicals to produce oxygen and water, so SOD is the first line of defense against free radical damage in the body and the most important antioxidant enzyme in the organism. As one of the most effective and important antioxidant enzymes against oxygen free radicals, SOD can effectively eliminate excessive oxygen free radicals produced in the metabolic process of the elderly, thus delaying the aging phenomenon caused by free radicals. The harm caused by excessive oxygen free radicals to organisms mainly includes three aspects: first, oxygen free radicals attack proteins, resulting in oxidation of specific amino acid residues, peptide chain breakage, cross-linking of reaction products and changes in protein charge number, which leads to protein damage; second, oxygen free radicals can induce DNA breakage, lack of mutation or other lethal mutations; third, oxygen free radicals attack biofilms. Free radicals can promote the production of lipofuscin in the body and accumulate in skin cells to form senile plaques; free radicals can also lead to skin relaxation and wrinkles in the elderly.