There should be a category on this blog called “Don’t Hold Your Breath”, for all the promised products, or events which will be a very long time coming. Take for example the proposed rub on birth control, which is hoped to lower the sperm count to an “infertile” level. It’s a combo of a progestin, Nestorone, (segesterone acetate) , and testosterone, which is to be rubbed into the skin on a body part remote from the target organs.
You may read about it at this LINK, but don’t hold your breath waiting for guys to use it, if it ever comes to market.