Today I was clipping a calf and she coughed and I nicked her tailhead. Needless to say I was pretty mad bc it's hard to grow hair on the tailhead and she has to show in a month. When I got home I was still pretty angry and I was telling my mom what happened and my little brother smarted off and said put some rogain on it...That got me to thinking. We use all kinds of human products on cattle anyways...Has anyone ever used human hair growth products on cattle? Did they work? Sounds like something to try anyways.