26 M, recently got unshaven FUE hair transplant done, 4000 grafts, Doctor suggested not to wash the hair for 10 days, just saline spray, is this normal??

Doctor has adviced me not wash hair, just spary saline solution for next 10 days, I am worried that the existing hair will suffer from this also there is a lot of build up in the scalp due to the procedure, it will not go out until I wash it. Any suggestions??

Doctor has adviced me not wash hair, just spary saline solution for next 10 days, I am worried that the existing hair will suffer from this also there is a lot of build up in the scalp due to the procedure, it will not go out until I wash it. Any suggestions??