A hair growth stimulant is provided. The hair growth stimulant uses carbonized chestnut burrs that exhibit excellent stimulatory effects on hair restoration and hair growth effects without causing side effect and toxicity. The hair growth stimulant exhibits excellent stimulatory effects on hair restoration without causing any side effect and toxicity in humans and stimulates hair roots to greatly contribute to hair growth. Therefore, the hair growth stimulant is effective in preventing hair loss and grayness. In addition, the hair growth stimulant is formulated into a cream or ointment preparation, which is highly effective in promoting the restoration of hair, to considerably shorten the time required for the treatment of hair loss. Furthermore, the hair growth stimulant uses vegetable ingredients only, thus causing no side effect in humans. Moreover, the hair growth stimulant is softly applicable to the scalp, thus offering convenience in use.