Washing off the crusts at 12 days

I waited for 12 days before washing the recipient area of my transplant.  At that time, could I have damaged the grafts?

We wrote an article that discusses what happens day by day after a hair transplant. The grafts are secure in 7-8 days if no crusting is present. If crusting has not come off with good washing, removing the crusts at 12 days with good washing techniques is safe.