I am using toppik fiber and I want apply oil on my head can I do this yes or no?

It is best to contact your doctor about post operative care and instructions since each doctor has a different regimen.It is VERY IMPORTANT to inform your doctor about any side effects.

If you put multiple units of hair follicles in one incision site, it is similar to the old style hair plugs. 

Strenuous exercise that put tension on the scalp can always stretch the new incision creating a wider scar.However scar formation is also dependant on the individual (no matter how careful you they are).  You cannot control this variable.  The only variable you can control is being careful wi...

Many patients have second surgeries in the same area as their first surgery to add fullness.  There is always a chance for damage to existing hairs but an experienced surgeon should be able to mitigate the risk.

Smoking is generally bad for you.  However there is no data on if smoking will affect your surgery results. 

In simple terms hair transplant cannot achieve volume and density because you are only taking your existing hair and rearranging them.  There are no NEW hairs being added.  In addition, you are likely losing your existing hair.