Rhinoplasty 4 weeks post surgery, hairdresser hit my nose with the brush when brushing my hair down. Could there be damage?

Hello. Great question. I am sorry for the small accident. You are still early in your recovery process. It might have or might have not caused any damage. With out pictures I cannot give a detailed evaluation. Please follow up with your surgeon. If concerns persist, please contact a board certified plastic surgeon for a detailed examination.

It is great that you are being so cautious and vigilant about protecting your nose after surgery. Despite your best efforts, accidents like this will happen.  The good news is that at 4 weeks, you are healed enough such that a minor trauma like this should not have any effect on your final outcome.  Nevertheless, be on the lookout for a change in shape, or a contour irregularity, and if you notice something, seek a professional in-person exam with a plastic surgeon.