The present invention provides a peptide consisting of an amino acid sequence of SEQ ID NO: 1. Also provided is a method for promoting proliferation of a dermal papilla cell by incubating the cell with the peptide. Further provided is a method for promoting growth of a hair follicle in a skin by applying the peptide to the skin. Still provided is a method for preventing hair loss of a subject by administering the peptide to the subject. Yet further provided is a method for promoting hair growth of a subject by administering the peptide to the subject.