April 2023 in “Journal of Investigative Dermatology” Cinchona succirubra extract with caffeine improves hair growth and reduces hair loss.
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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June 2017 in “Pharmaceutical research” Researchers developed a model that shows hair follicles increase skin absorption of caffeine by 20%.
May 2025 in “Journal of Cosmetic Dermatology” Cuticapil Stem Hair Serum improves hair growth and reduces shedding when added to minoxidil.
August 2015 in “Arquivo Brasileiro de Medicina Veterinária e Zootecnia/Arquivo brasileiro de medicina veterinária e zootecnia” Caffeine intake during pregnancy and lactation can cause skin lesions in mother rats and their babies, not linked to cortisol levels.