Like a topcoat for nails, this UV protecting glaze instantly forms to hair, creating a transparent, weightless shield that adds intense color depth and dimension and prism-like shine. IGK Expensive nourishes, strengthens and softens hair after the wear of color treatments. Like a topcoat for nails, this UV protecting glaze instantly forms to hair, creating a transparent, weightless shield that adds intense color depth and dimension and prism-like shine. IGK Expensive nourishes, strengthens and softens hair after the wear of color treatments. Founded by a team of four world-renowned stylists, IGK creates cutting-edge, cruelty-free hair care products free of parabens and sulfates that keep your hair looking its best, wherever you are.