Ergothioneine Complex (Bioyouth™-EGT) is obtained by co-fermentation of Hericium Erinaceum and Tricholoma Matsutake. Co-fermentation can increase the yield of ergothionein, and obtain more glucan, amino acids and so on. Ergothioneine (EGT) is a sulfur-containing derivative and an antioxidant and cytoprotective agent existing in the human body. Ergothioneine can be transferred into cells and mitochondria through the transpot protein OCTN-1 on the cell membrane and mitochondrial membrane of keratinocytes and fibroblasts, there by eliminating free radicals. Bioyouth™-EGT Ergothioneine Complex can protect DNA and mitochondria, decrease apoptosis, reduce UV and brown spots, reduce fine lines and roughness and improve skin elasticity. The product conforms to both natural and genetic anti-aging trends.