May 2024 in “Journal of functional foods” Coffee bean residue extract helps hair growth by activating cell processes.
July 2023 in “International journal of research publications” Green coffee bean extract didn't grow hair but reduced a hair loss-related enzyme in rats.
January 2021 in “AIP conference proceedings” A hair serum made from coffee by-products can promote hair growth and is safe, but needs less stickiness.
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January 2023 in “International Journal of Cosmetic Science” Coffee and its by-products are promising for skin health benefits in cosmetics and help reduce environmental impact.
May 2026 in “Jurnal Riset Kefarmasian Indonesia” Robusta coffee beans have high caffeine content, useful for products like hair growth stimulants.