This hair mask doubles the shine, reduces frizz, and strengthens your hair. This hair mask doubles the shine, reduces frizz, and strengthens your hair. Created by hair-obsessed beauty mavens in Brooklyn, New York, Eva NYC offers haircare products and tools with proven ingredients and novel technologies, promoting brilliant blowouts and luscious locks. The brand’s convertible line of shampoos, conditioners, and treatments allow you to experiment with unique looks for customized flair.