Q: I was told that I have low hair density in the donor area. Will multiple hair transplant procedures improve the results of my hair restoration? — J.G., Hoboken, NJ

A: Yes, but subsequent procedures would be smaller and there is a point of diminishing returns where additional procedures would yield so little hair that they would not be practical. There is a finite donor supply and once this is tapped, no more hair transplants are possible, regardless if one uses FUT or FUE.