What It Is: This hyaluronic acid serum brightens and firms skin. Tremella mushroom is a natural source of hyaluronic acid - a super hydrator for your skin that replenishes moisture deep into skin. Kakadu Plum contains 100x more Vitamin C than oranges and helps to brighten, even redness and firm-up skin.<br /><br />How To Use: Apply 1-2 drops to clean skin, morning and night. Use after cleansing and before applying moisturizer.