Can you use hair fibres after FUE transplant? 3 weeks post-op.

It is best to ask your surgeon about post operative care as each doctor has their unique regimen.  At this stage you can use hair fibers.

Hello, 
We suggest to our patients to wait 4 weeks post-op before using hair fibres. However, please consult the physician who performed your surgery, and he will advise you accordingly.

I usually allow my patients to start using my "InstantHair" hair fibres about a week after their procedure.  So you are fine at a month,Dr. Robert Jones

If all of the crusts are off of your recipient area and you are three weeks after the transplant, then the use of hair fibers is fine

Usually you can start using producta after a couple of weeks. If your doctor suggests to wait a month, then listen to your doctor.