The present invention relates to a cosmetic composition with a silk protein hydrolysate for accelerating hair growth and is proven to actually accelerate hair growth. The hydrolysate is alkali or acid and is obtained by the steps of: hydrolyzing a silkworm cocoon by heating after adding hydrochloric acid to the cocoon； agitating an alkalized solution obtained by adding sodium hydroxide to the hydrolyzed solution obtained in the earlier step； neutralizing the alkalized solution by adding hydrochloric acid to the alkalized solution； and filtering the neutralized solution obtained in the earlier step.본 발명은 실크 단백질의 가수 분해물을 함유하는 모발 성장 촉진용 화장료 조성물에 관한 것으로, 모발의 성장을 실질적으로 촉진함이 확인되었다.
