Right after Kybella injection, the patient has immediate swelling that can last 7 to 10 days and actually due to the swelling it looks eve less. It takes about 6 to 8 weeks till the patient notices the fat bulk reduction and the tightening of the skin can even take longer. The majority of cases it takes more than one sessions to see the optimum result depends on the size of double chin and usually the result is more noticeable after the second injection. Good luck and I hope you find this answer helpful
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