Does Sculptra work well under the eyes to increase collagen?

I would not recommend using Sculptra under the eyes.  In my opinion, hyaluronic acid fillers, such as Restylane give better results.  

I do not suggest putting fillers to the under eyes there is high risk of developing lumps/bumps.  Best, Dr. Emer.

I have used Sculptra here but it is hard to fine tune with it. I use it as a base and then layer Restylane on top. Imagine placing water in the tear trough and expecting it to lay down collagen exactly how you want. It is impossible to do. I will fill all round the eye with small amounts of Sculptra with cannulas in a deep fashion. I don't see nodules but I still need more filler on top to get to the final result. I use Restylane on cannulas for most of my treat trough corrections.

Sculptra is a unique filler in that it stimulates your own body to produce new collagen. I often begin in the cheek region to replace what is missing and to "anchor" the upper cheek. After over 10 years of experience, I find that a strategic correction of the cheek contour can also significantly improve the appearance of the lower eyelid area. 

I agree with other reviewers. I believe that Restylane is a better injectable for the tear troughs because it is reversible. Sculptra may precipitate for lower eyelid granulomas(especially if the Sculptra is not diluted enough) because there is very little soft tissue overlying the orbital rim. It is true that Restylane and Belotero can produce a blue hue (Tyndall effect) to occur especially if the injection is performed superficially and /or a large volume is injected.This effect can be avoided in most cases by injecting Restylane deep and restricting the volume of the injection.