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?

Thanks for your inquiry!  Yes it is common to notice hardened lumps in the treated area appearing about a week after initial treatment. In my patients, I have noted these as coagulated fat lumps lasting up to a few weeks after the first treatment and consistently less following each subsequent treatment. This is an average observed time frame so the exact duration depends on your body's healing process. If you feel discomfort from these lumps or have observed them for more than 4 weeks, I recommend visiting your physician to obtain tips and suggestions for assisting the healing process.Best of luck!

this is good, it means you will get a better outcome from the treatment.  Massage and RF treatments like exilis and venus legacy make this improve more quickly.  Best, Dr. Emer.

Thank you for sharing your question and congratulations on your Kybella treatments.  Once injected Kybella damages the fat cell's walls allowing for the body's immune system to clear the fat to leave you with a smoother, sharper neck contour.  Small bumps are the result of the fat being damaged by the treatment and is not uncommon.  These will gradually soften and disappear in the 4-6 weeks after treatment.  Hope this helps.

These hard nodules are fairly common after Kybella treatment and actually are a good sign that your fat cells have been damaged by the chemical in Kybella. The nodules are small areas of fat that have been damaged and hardened. They will soften and reabsorb usually by 8 weeks after treatment. 

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.