25 and want to have a second hair transplant

I am 25 years old suffering from hair loss . I had a FUE Hair transplantation of 2000 grafts for the hair line but the results was not full and I believe now that I need more hair in the top and the vertex area. Can I do another hair transplant?

Your surgeon should have made a Master Plan for you knowing your donor density so that your surgeon could then know if your donor density is adequate to support a second hair transplant. Sometimes a strip surgery may be better for the second hair transplant if the donor density appears to be thin from the first surgery?