Mad Hippie - Vitamin C Serum - 1.02 fl. oz. (30 mL) Mad Hippie Vitamin C Serum is an award-winning and uplifting antioxidant blend with 8 actives such as Konjac Root Ferulic Acid and Hyaluronic Acid. This Vitamin C Serum has been formulated to brighten tighten and smooth the skin while reducing the