I remember seeing a pic of a competitor who clearly had some SEO in his tear drop. It wasn't even that large, but still looked weird and warped.
Considering the peculiar shape of that muscle, it might be hard to distribute the SEO properly so as to preserve the contours. So I would start with a very small amount or let someone experienced do the injections for you.
I wouldn't do it. Well I wouldn't do it if you squat heavy.
Scar tissue in areas like that like to strain and tear when you put them under high loads. I hate spot injecting or oils in muscle for site enhancement. Just totally not worth it for me. I'm under the impression you can build muscle anywhere with enough work
Regarding legs I only have personal experience with syntherol in my calves (amazing). I haven't heard about too many using it in their teardrop. I know quite a few guys who done quad sweep with success though. I recall one guy stating the shots hurt him (teardrop) so he stopped. T
he competitor mentioned above will likely be Ernie Taylor as he competed with both teardrops looking ridiculous. Although I would suspect that was large doses of something in the days leading up to the stage for them to stand out but it went very wrong. I can't understand anyone competing if they looked like that all through prep. Although Ernie Taylor messed up his arms and various other areas so god knows what he was using and how much.
Lilgrumpy had great results in his quads but he missed out his teardrop from the start...
Perhaps Big A or someone else can chime in who have or known people to do their teardrop. My best advice would be to try a small shot and see how it feels and go from there. Sorry I couldn't be more help.