Aberchrome 670 is primarily used as a photochromic compound, meaning it undergoes a reversible color change when exposed to ultraviolet (UV) light. It finds application in smart windows, light-sensitive lenses, and optical switches where dynamic control of light transmission is required. Due to its fatigue resistance and distinct color shift upon irradiation, it is also employed in sensors and rewritable optical storage media. Its ability to switch between transparent and colored states makes it suitable for developing advanced photoresponsive materials in coatings and textiles.