The light, water-soluble formula, envelops the hair giving it a fabulous shine and controlled smoothness. Hair type: unmanageable, frizzy hair by counteracting frizziness and calming unruliness, this leave-in serum helps hair reflect light for intense shine. Infused with reflexium, it also envelops hair with a light, water-soluble film, so hair looks fabulously shiny without weighing hair down.