SG O.xiboost™ is currently FREE WITH EVERY INDIVIDUAL PURCHASE OF SEA GLOW™ Cleanser-Conditioner. O.xiboost™provides a gentle source of free radical oxygen (O.) It safely accelerates the anti-yellowing effects of ISLAND GIRL® SEA GLOW™, while not interfering with its other anti-aging properties. HOW TO USE: Wipe on surface before application of genuine ISLAND GIRL® SEA GLOW™ followed by gentle scuffing (3M pad). Then, while avoiding overheating, expose to a source of UV (daylight or UV lamp).