To provide a hair nutrition supply member capable of promoting hair growth using a movement of fixing hair with a hair brush.

The hair nutrition supply member includes a hair nutrition supply part 11 that allows insertion of bristles 55 of a hair brush 50, after the insertion of the bristles, retains a state where effective styling parts of the bristles are exposed, and comes into contact with the hair to supply a sericin component of a silk. Further, the hair nutrition supply member includes a spacer for adjusting the length of the effective styling parts of the bristles of the hair brush by the hair nutrition supply part.