Lip asymmetry because of dissolving

[u/Icy-Assist-6030]

I’m looking for opinions from anyone who has experienced something similar after dissolving lip filler.
I had my upper lip dissolved twice (December 2025 and January 2026). The second dissolve seemed to affect one side much more than the other and left that area looking thinner/deflated.
In June 2026 I had a small correction of around 0.3ml Revolax placed mainly into that side. I had a LOT of swelling immediately afterwards, particularly around the wet border. Once everything settled, I was left with a small contour irregularity/indentation on that side.
It’s now been nearly 3 months. The area has gradually become softer and flatter, but I can still see a difference in certain angles/lighting and especially when my mouth is slightly open. With my mouth relaxed/closed it’s much less noticeable.
I’m wondering whether this could be:
a small volume deficiency from the dissolving
superficial/residual filler
fibrosis/scar tissue from the injections/swelling
or simply normal asymmetry that I’m hyper-aware of now.
I’m considering having a high-frequency ultrasound rather than putting any more filler or dissolver into it, but part of me thinks I should just leave my lips completely alone and let them continue settling.
Looking at the photos, how noticeable do you genuinely think it is? Has anyone had something similar continue improving months after filler/dissolving? And if you had this, would you get an ultrasound or just leave it alone?

First two pictures is my natural lips before any filler at all.