Can white hairs be replaced by black hair? If they can, will no white hair will grow afterwards?

It would be difficult to advise on if you should or should not have surgery without an examination and better understanding of your goals. Patient #1 may be a great candidates if their expectations are reasonable. Patient #2 (with the EXACT  same hair loss pattern) may be a bad candidate be...

It is best to contact your doctor about post operative care and instructions since each doctor has a different regimen. Even if you did damage a graft, one graft will not impact your final results.

It is best to ask you doctor about your concerns.  The specifics of your surgery and how your surgery was planned is something only your doctor knows.  For example: If the 150 grafts were supposed to go right in the middle of your hairline, it would make a huge difference.

It is normal to shed transplanted hairs weeks after surgery.  The new hairs may take 6 to 12 months to grow.The photo looks like a dried up graft. If you are concerned, go back to see your doctor.

 Thank you for your question. Placing plastic over the follicular unit grafts is not common practice. I personally feel that allowing the graphs to “breathe“ is better.

It is best to contact your doctor about post operative care and instructions since each doctor has a different regimen.In general you can resume using your hair products after the wound has healed.