Can I use Sculptra for this cellulite dimple under the butt? (Photos)

That is a skin roll. In those who've not had a surgical procedure like liposuction, it represents an attenuation of the fascial ligaments that hold our skin to the deeper muscular fascia, leading to rolling of the skin. This is common in the upper thigh/buttock area. Qwo is collagenase, which is an enzymatic protein designed to break down tight fascial ligaments (collagen) that are believed to cause cellulite dimples; if anything, I would imagine that Qwo could make things worse. Unfortunately, any filler will not improve that issue unless enough of it was use to inflate the tissue. This would leave you with smoother contour, but also a fullness that you would not appreciate. Having said that, using a very judicious amount of fat graft could improve the contour there.

Dear Leena0217,
Thanks for sharing your photos. Your contours are beautiful, noting the small dimple under the banana roll under the buttock crease.
1. I agree that for this minor irregularity, Sculptra sessions would be the most beneficial given it is just on the once side.
2. I have also had improvement following CoolSculpting using the “Smooth” applicator to diminish the banana roll to the level of the dimple.
3. I do not recommend as others have to liposuction contour the banana roll itself. My experience is that this “bulge” is essential to keep the buttock falling and rotating inferiorly causing more disappointment. It is better to “tighten” and firm the skin in this area to keep the “cheeks” up.
4. Please consult with a talented, Board Certified Plastic Surgeon skilled in minimally invasive options.
I hope this helps! All the best!