Possible to Reverse Buccal Fat Removal?

Reducing facial volume is generally a bad thing, since this happens naturally as we age. The loss of facial volume is further worsened by the loss of collagen and elastic fibers in our skin, causing sagging, jowl formation, looseness in the neck area, and deepening of the nasolabial and subcommissural folds (marionette lines). You didn't state your age, but removing fat from your upper cheek only gives you more of the same problem you already have! (And, how do you do that without surgery, by the way?) Dr. Aldea is right, if you don't like how things look now, right after your ill-advised procedure, you will REALLY not like how things look as years go by and volume decreases more and skin sags more.

You may need judicious and expert fat grafting to restore volume, and may also need facelift to tighten and lift the facial tissues to a more youthful position. Seek an experienced, board-certified plastic surgeon for more information; more than one consultation may be helpful in clarifying advice.

The simple answer is no. Unlike other cosmetic procedures, buccal fat removal is permanent. Once the fat has been removed, it cannot be restored.

Patients who underwent buccal fat removal and are displeased with the results, may benefit from other plastic surgery procedures. However without pictures of the face in question, it is impossible to asses the problem and recommend solutions. Consider updating your question by adding pictures of the face in several angles. 

You have many options. It is all about fat (or volume) in the right places. In addition to facial cosmetic surgery I do feminization procedures in the transgender population and it applies to all sexes and orientations really. The key is Hot is HOT! One good option In your case is likely fat transfer to taper back in that lower 1/3rd of the face. The upper third volume is mostly muscle (temporalis) and bone (maxillary and zygomatic). So those are structures we need and cannot really be removed cosmetically. 
Hope this helps.
Best of luck.
DrC

Buccal fat can not be reversed but it can be improved.  Methods to improve the appearance of the overly gaunt face include:-Fat transfer to the area deficient-Facial fillers including Sculptra and HA fillersMost patients early on can not determine their real results so patience is always recommended.

Altering the fatty compartments of the face can be done subcutaneously (below the skin) or submuscularly (below the muscles of the face). The removal of the buccal fat pad consisted of removing the submuscular fat, with the goal of diminishing the volume in the midface (cheek) and highlighting the zygoma (cheek bones). Non-surgical options do exist to add volume or augment the area, which is now “gaunt.” These include fillers and fat grafting.A Board Certified plastic surgeon can evaluate you and determine the degree of deficiency in your lower cheek area. Fillers can be used to temporarily improve the gaunt look. Fat is a more permanent option, but does require the use of incisions to harvest fat from another area of the body. Trying to reduce the fullness of the “upper cheek “ requires a different approach. Any attempt to reduce the fullness of the upper cheek is difficult. It may best to fill in the lower cheek and then re-evaluate your appearance. It is possible that simply restoring fullness to the lower cheek may correct your problem.