A leave-in treatment that repairs, patches and protects each strand of hair from photo degradation. Photo-Age Defense is a protective hair shield that resurfaces strands, filling in gaps and tears while smoothing the hair cuticle. Refracts natural and artificial light including UVA/UVB rays, preventing and reversing the damaging effects of photo degradation. Restores hair to a healthy, youthful state. Key product benefits are derived from the formula's micro-emulsion beads. Micro-emulsion beads contain powerful technologies that activate at the point of emulsification, locking in essential ingredients (fatty acids, vitamins, minerals and proteins) and locking out damaging light sources. 2 oz.