A lightweight liquid containing the full compleMenst of the Cellex-C signature ingredients pure L-ascorbic acid (vitamin C), tyrosine and zinc sulphate. The serum works synergistically to encourage a firm, youthful, elastic quality in the skin. Series: High Potency Serum. Gender: Unisex. Category: Skin Care. SubType: Oil & Serums. Beauty group: Body. Size: 1 oz. Barcode: 626704111011. High Potency Serum by Cellex-C for Unisex - 1 oz Serum.