Problem with smile and weakness of lower lip after chin lipo (Photo)

Facial nerve injuries after liposuction to the neck can occur even with vaser liposuction. Fortunately these injuries are usually temporary. They can last for several months, but you should see improvement as time goes by. 
From your photos, it does not appear that you had a complete injury to the nerve. In other words, I think you should expect a full recovery. For now, there is no medication or treatment that will make the recovery quicker. Just be patient and you should see improvement monthly.
Good luck

hello maztan60 Final results can be seen 2-4 months later as the swelling continues to diminish and contours become more defined. You should visit or contact your PS about this concern. #post-op #lipo

It can happen and is usually temporary.  When patients have swelling, it creates a lot of extra water retention around the nerve.  The nerve runs parallel to the areas where your contouring was performed.  Most if not all cases resolve over time, some take up to 6-9 months.  These are mostly temporary and not permanent.

You are correct in that you most likely suffered damage to the marginal mandibular nerve during the vaser liposuction.  The good news is that this is almost always temporary, although it can take 4-6 months.  There are rare cases in the literature of this being permanent.Best of luck to you.

From your photos, it does not look like your permanently damaged the nerves, as it would be drooping more. The rule of thumb is to wait 6 months for 'final results' and swelling to reduce. Just give it time and it should resolve.