White dirt is appearing in the recipient area after washing with shampoo on 15 day after FUE.

If you are having issues on your scalp after surgery it is best to contact your doctor for an examination.  It is not very clear what you mean by "white dirt".

Thank you for posting your question. At this point, it is probably the residue build-up since your are not directly using your fingers to wash your scalp like you regularly do, prior to the procedure. Once you have reached your final post-op day instructions, most will fall out, and you should start seeing hair growth 3 to 4 months after procedure. 6 months about 50% and 12 1o 14 months for the final outcome. Hope this helps

By day 15 your scalp should be fully healed and all grafts locked in place. The "white" dirt is probably the scalp around the transplanted graft that is supposed to slough off. Remember the grafts will shed approximately 4-5 weeks aft the transplant and will remain dormant until the 3rd month. To be certain, you should have your physician or transplant nurse examine your scalp as soon as possible.

When you wash your recipient area, the tops of the grafts take on the water in the shampoo and when it dries, it may look like you describe. As long as you don't rub it off and wait until it falls off with good washing there is nothing to worry about