October 2023 in “Jurnal Ilmu Kefarmasian Indonesia” Cinnamon essential oil and virgin coconut oil hair tonic promoted hair growth, with the highest concentration performing better than the positive control.
May 2023 in “Jurnal farmasi sains dan praktis” The hair tonic with cinnamon oil and coconut oil was stable and caused very mild irritation.
Cinnamon oil works as well as minoxidil for hair growth.
February 2026 in “ACS Applied Materials & Interfaces” Carbon dots from Cinnamomum burmannii leaves can promote hair growth and regeneration.
February 2026 in “World Journal of Interdisciplinary Innovation Sciences” Cinnamon may help improve insulin sensitivity in women with PCOS.