research Betacellulin Regulates Hair Follicle Development and Hair Cycle Induction and Enhances Angiogenesis in Wounded Skin 36 citations , October 2007 in “Journal of Investigative Dermatology” Betacellulin helps blood vessel growth in wounds but delays hair growth.
research GROWTH FACTORS IN HAIR ORGAN DEVELOPMENT AND THE HAIR GROWTH CYCLE 90 citations , October 1996 in “Dermatologic Clinics” Growth factors are crucial for hair development and could help treat hair diseases.