It's been 4 weeks since my 2nd Kybella treatment, and there are a lot of small, hard lumps under my chin. Is this normal?

One common side-effect of Kybella is lumps or bumps in the treatment area. These nodules should dissolve over time, usually within a few weeks. If these nodules do not dissipate or cause you pain, contact your physician for assistance. Many experienced Kybella providers are waiting longer between injections. Recent data has shown continued improvement past the 4 week point. I have my patients return 6-8 weeks after injection.

Yes, what you are describing is common and not something to worry about. The nodules are fat cells that are simply waiting for the lymphatic system to sweep them away. They should resolve in time. Kindly,Kouros Azar