The present application belongs to the field of biomedical and cosmetic technology, and particularly relates to the application of
periostin in the preparation of preparations for promoting the activity of
hair follicle cells or for preventing and treating alopecia. The present application first discovers that
periostin has the activity of regulating
hair follicle papilla cells, hair matrix cells and
outer root sheath cells, can promote the proliferation of
hair follicle papilla cells, hair matrix cells and
outer root sheath cells, improve the hair induction ability of hair
follicle papilla cells, and promote the hair
follicle cycle transformation,
hair growth and thickening, and can be applied to the preparation of preparations for treating alopecia.