I had Restylane under my eyes and it didn't work. Would Belotero be a better option?

Thank you for your question.  It would helpful to see before after pictures before writing off one injection treatment.  I generally do prefer Restylane over Belotero in the tear trough area when the product is placed deep as it has more substance to and holds the position better and tends to last longer.  Much of the result will be technique and less the actual product.  Regardless of which direction you go, I would recommend good before/after pictures and in general, full correction is easier tell the longevity vs partial correction (glass half empty).Also, surgery is always another option as this will provide a much better longevity than the fillers.  I would recommend visiting with a plastic surgeon who has a high volume injection practice in addition to their surgical practice.

The tear trough can be filled with many products. Restylane and Belotero seem to be the best. Restylane injections lasts longer and volumize somewhat better, but may develop slight irregularities and swelling for a little longer. Belotero seems to smooth out the area more evenly with less swelling, but lasts for a much shorter time. 

Most people do the Belotero for under the eyes to help with the hollowness under the eyes. We have seen great results with that too. I think you should have a consultation with the doctor and see what they recommend.