(Study) A new study released by the Society of Gender Research this month reveals that, unless a woman brings it up, the average male will only notice fingernail polish on a female once every six years. “6.2 years, to be exact,” according to Daniel Henderson, who documented the findings for SGR in the July, 2015 edition of its monthly journal. “The information is fascinating considering that fingernail polish is a two billion dollar a year industry.”