InstaHard surprisingly not only works, but it works extremely effectively for upwards of 90% of its users within the first 12 days. That’s a pretty significant success rate that not every product out there can boast, which is a huge win for the company behind InstaHard. Though I’ve only been using it for about a week now, I can clearly see that the results are there and the difference it has made in my sex life has been dramatic to say the least.