Are Botox injections near nostril the only way to treat gummy smile or can injections across top lip help as well? (Photo)

it sounds like you got Botox injections like we use to treat wrinkles.  The first ones you got sound more like the ones to treat a gummy smile.  Did you like the effects of the first treatment?  If so, you can communicate that to future doctors you may see to help get the results you want. 

To treat gummy smile Botox is placed just to the side of each nostril to relax the muscle that is pulling up the lip.  Injections in the upper lip itself are used to treat vertical lip lines like "lipstick lines" and "smoker's lines". They have the unfortunate effect, sometimes, of making it hard to pucker the lip or use a straw. You can still have the appropriate injections performed, however, while you wait for the lip effects to wear off. Good luck!