When can you wash hair normally after FUE transplant and go back to normal routine?

It is best to contact your doctor about post operative care and instructions since each doctor has a different regimen.  You can start washing your hair day after surgery.

Approximately 10 to 14 days one can usually go back to all normal hair routines. Including washing and styling.

You can wash the hair & scalp briskly on the 10th day after surgery. You can wash it gently on the second day.

You may start to wash your transplant area at second day of surgery with care and massage the transplant area gently so the scabs will fall off... After two weeks of hair transplantation  it is acceptable  to wash hairs as normal /preoperative period of surgery. All scabs should be cleaned with pressured (not gentle) massage to transplant area  after 2 weeks .Dont forget that you may wash your head with normal pressure and if you need you can use a wet towel with soap for massage the scabby area, it Works very well to remove scabs .Patient may feel free to loosen any scabs on his/her head by massaging and that will not  damage the grafts after 2 weeks . 

After 7 to 10 days, the placed follicles are essentially grafted.  I typically have my patients work the residuals scabs off of the donor site during this time.  After 10 days, I permit typical washing which means allowing direct water from the shower head to hit the graft area. I warn against more robust scrubbing of the recipient site for about one month post procedure, but light washing is fine.
I like my patients to get back into their routine of exercise as soon as possible with light exercise, such as walking and light arm work with weights.  I ask them to refrain from signifiant exercises such as running, heavy leg work and exercise classes for at least 10 to 14 days.