I had Kybella injections 48hrs ago, can I still use Retin A before going to sleep?

Retin A can be quite irritating to the skin, so if you are still tender or sore from the Kybella injections, I’d avoid using Retin-A there. However, you can use it on the rest of your face and neck. Once your skin feels less tender, feel free to use the Retin A under your chin as well. It won’t affect your Kybella treatment at all. Consulting a board-certified dermatologist for your Kybella will give you the best chance of beautiful results.

Kybella should have no effect on the surface of the skin so using Retin A after treatment is fine and won't cause a problem with your treatment.

There’s no reason not to use Retin-A unless your skin is tender after your Kybella treatment. Just use your judgment. As long as you have no irritation, Retin-A is fine. If you do have irritation, wait a few days until it settles down before putting the Retin-A on your chin. Ask your board-certified dermatologist if you have other questions about what you can and can’t do after Kybella. It’s actually a well-tolerated procedure with little downtime and few prohibitions.