Hair growth after a transplant is dependent on many factors. These include the quality of the grafts and the treatment of the grafts during surgery. Where they placed in simple normal saline or was a biologic holding solution used? Growth factors are also critical for assisting growth after surgery. PRP, which I recommend with every surgery along with other growth factors can help transplanted hair grow faster and be more robust. Laser can be helpful, but less so than other factors. In terms of shock loss, I find that using implanters makes the most difference. Typically large volumes of fluid are injected into the scalp followed by the creation of "sites" to place the grafts in. With the use of implanters, less fluid is needed and therefore less stress on existing hair results yielding less shock loss.