Steroid Injection to Correct Fat Injections?

Steroid injections can often reduce inflammation and cause atrophy of tissues, including of fat injections, so yes.
They cannot dislodge firm fat grafts that are composed of heavy fibrous (scar) tissue, rubbery grafts, or long-term inflammatory nodules, which must be removed surgically. Attempting to dislodge these nodules with sterid injections causes the more delicate tissues around the lumps to dissolve, creating a crater... with the nodule still there.
Your board certified plastic surgeon can help with guiding you through the process of which technique is most beneficial and when.

 

Kenalog injections may help improve firmness and swelling of injected fat.  This is also often combined with gentle massage, which help speed up the process

Upper eyelid fat grafting should be performed by an experienced plastic surgeon to avoid complications such as palpable lumps and nodules. If this occurs, you may consider TAC injection or surgical excision. The amount, density, depth, and focalization of the fat should be assessed to determine the appropriate treatment.

Time will usually result in resolution of lumps following fat injection. Massage can speed this process. Kenalog (steroid) injections also help but can result in atrophy of surrounding tissues and should be used conservatively.Stephen Weber MD, FACS

It is possible to inject a small amount of steroid into a pocket of fat that has been over injected in an area of fat grafting. When considering this, it is essential to work with a board-certified plastic surgeon with regular experience in fat grafting. Always keep in mind that steroids are a very powerful medication which will probably thin and change the quality of the skin. Steroids should be injected with regular caution in the skin so as not to cause changes in the texture of the skin as well as in the thickness.
 

If you had eyelid surgery and fat injection is performed later, then steroid injection may work. If you had too much fat injection ,then excision is a better option. Pictures are helpful.

Yes, steroid injections can be used to correct fat injections, but it has to be done extremely carefully. A very small amount of kenolog could be used to correct any deformity. Care to avoid injecting too superficial other wise skin pigmentation could occur.