When is it safe to go to a hairdresser after having a cyst surgically removed on my scalp?

I would recommend waiting at least 4 weeks before having your hair done after removal of 2 cysts from your scalp.  You may want to ask the surgeon who performed your cyst removal, because your surgeon has the most information about you and your procedure and would be best qualified to answer your question.  

First check with the dermatologist or surgeon who did the procedures for you, but generally you can have your hair colored and processed a few weeks after the sutures are removed.  You would not want any chemicals on the scalp until the wounds are well closed and have no more open skin.  Good luck!