Unfortunately you can't be sure. For some it will, for some it won't. The big three are Mino, Fina and any ketaconazol shampoo. If you are doing that, you are doing just fine. You can still get a good head of hair with some luck, just by using these three.
HairlossTalk's recommended treatments, in order of Proven Effectiveness, greatest to least, is as follows: (1) Propecia (2) Rogaine (3) Tricomin (4) Topical spironolactone 5% (5) Revivogen (6) Crinagen (7) Folligen (8 ) Everything else.
There are other ways to battle hair loss like dutasteride, RU and more. For now i would stick with the big three, no need to go to the more "experimental" stuff just yet. It will take
at least 3 months to notice any progress.
Harmless additions might be vitamins like biotin and you could think about dermarolling. Can't do much harm, but if it actually does a lot against hair loss i'm not really sure. The vitamins at least make your hair healthier and the dermarolling will get the minoxidil closer to the follicles, don't do the whole wounding dermarolling, it's scary.
Take a look at
http://www.hairlosstalk.com/interact/showthread.php/85991-9-months-big-3-good-progress for vitamin use
Take a look at Nanogen Fibers(fake hair fibers), maybe this can help you a bit during performances although it won't cover up temples and receding hairlines i think.
Last but not least, i am not an expert. What I mention above is a good start. There are more intense treatments, which may work even better. Perhaps someone can give you more advice. I just want to give one tip: Don't rush into everything just because you are desperate. What i mention above is pretty safe stuff and than you are already messing with your hormone levels with Fina(watch the side effects of fina). Your health should always be your first concern. There are treatments that could harm your body and your mind. Always take a well thought through decision and look for other sources to confirm what you have read.
For me no progress yet, you can read my story here:
http://www.hairlosstalk.com/interact/showthread.php/86707-26-losing-hair-attack-mode-on