I have a dent on one side of my head, my right side to be precise: Will fat injections help? (Photo)

There is some asymmetry in your skull bones along the fusion line of the different bones. This is quite common and is usually not recognized because of our hair. However, since you shave your hair, this is visible. It can certain be treated wither with fillers or with fat grafting if it is really bothering you, but its likely most noticeable to you and most surgeons would say to leave it alone.

From the pictures it appears you have a more pronounced "suture line" on the right frontal skull. When you were born your skull was "open" in certain areas for the brain to expand . Gradually the skull fused. Your right frontal suture line fused more pronounced. Very often the cause is unknown. It appears to be  a "cosmetic" but not "functional" problem.A consultation with a Board Certified Plastic Surgeon can help you. After examination he may suggest an easy and small correction or a more invasive one. He may also suggest not to correct this deformity at all. As you can see options for you depend on an examination by a Plastic Surgeon. Good luck.