The effectiveness of a shine spray is not just determined by its ability to simply reflect light, it is also determined on the broadness of the spectrum of refraction and the distance of effective luminosity. Our award winning shine spray contains the clinically proven and publicly acclaimed X-Tend 226 which not only reflects, but has also been described as giving an almost visible glow. With a refractive index of 1.55 even small amounts can visibly increase your hairs shine.