75 citations,
November 1965 in “Textile research journal” Papain and bisulfite break down human hair by dissolving parts of it.
13 citations,
January 2007 in “International journal of pharmaceutics” Papain cream removes hair better than papain gel, causing hair follicles to widen and skin to thicken.
5 citations,
July 1999 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” Proteolytic enzymes damage hair follicles by detaching stem cells.
2 citations,
July 1999 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” Proteolytic enzymes damaged hair follicle stem cells in transgenic mice.
July 2024 in “Journal of Cosmetic Dermatology” Vegan collagen builder improves hair growth, skin smoothness, and reduces wrinkles and pain.