This is a very common concern. Lumps after any filler injection are very common, especially if a needle rather than a cannula is used to perform the injection. Injectors who use a needle tend to inject dollops of filler rather than “air brush” it place as when a cannula is used. What I mean by that is that with a cannula, multiple small threads of filler can be placed and this gives you a much more precise placement of the filler. That said, fillers like Restylane will remain soft but what you are likely feeling is the result of trauma from the needle. This should settle in time and is really of no consequence. If you like your result, you might consider a long term filler like Bellafill in a year when the Restylane has gone. This filler last 5 years and phenomenal results can achieved.
This video on filler safety helps explain some of the issues that can be seen after a filler injection.
Tear troughs be corrected with just about any filler including fat, one of the hyaluronic acids (Restylane, Juvederm, Belotero etc.) or a long-term filler like Bellafill. My patients generally chose Bellafill since it is long lasting and therefore they do not have the repeated expense on refilling and the repeated down time of getting a filler done like bruising and swelling.
The complication rate for all filler is about 0.12% according to the FDA’s filler surveillance data. Therefore, who you chose to have the procedure done and what filler to use are the decisions you have to make. It is always difficult to tell how much you will require until you are seen for the procedure but in general more is required when the hyaluronics are used because they need to be placed in the deeper tissues to avoid a common problem with them when placed too superficially called the Tyndall effect.
Remember that a syringe of filler is like a pencil in that you can put a pencil in an artists hands or in a 5 year old’s hand and you will get two different results!