Design house: Kiehl's. Series: Vital Skin - Strengthening Hyaluronic Acid Super Serum. Gender: Unisex. Category: Skin Care. SubType: Serums. Beauty group: Face. Size: 3.4 oz. SKU: 590512532. Barcode: 3605972256201. Kiehl's Unisex Vital Skin - Strengthening Hyaluronic Acid Super Serum 3.4 oz Skin Care 3605972256201.