Restylane - Gone in 5 Months?

You could try additional HA filler, like Restylane - alternatively, when you haveyour facelift done in a couple f years, consider fat grafting to the mid facial regions for a more permanant solution. I don't advocate the use of Sculptra in the midface because of prolonged edema/swelling issues I've witnessed in that region.

I'm not sure exactly what your question is, but I would say that it is unusual that the Restylane would be gone under your eyes after five months.  Normally, it lasts longer in that location.  It would not be so unusual for the Restylane to be gone in the nasolabial folds after five months.  You mentioned your injector was conservative and it is possible that using more next time could help your results last longer.  In regards to Sculptra, it is not a permanent filler.  Normally the results can last two to four years.  I would not recommend using Sculptra under the eyes, as due to the thin skin there, problems can arise.  Having fillers injected into your face should not affect your ability to have a facelift in the future.