May 2023 in “Jurnal farmasi sains dan praktis” The hair tonic with cinnamon oil and coconut oil was stable and caused very mild irritation.
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January 2022 in “Journal of Drug Delivery Science and Technology”
January 2021 in “Social Science Research Network”
December 2013 in “Annales de Dermatologie et de Vénéréologie” Cinnamon essential oil can cause severe or unusual skin reactions, with cinnamaldehyde being the main allergen.
July 2019 in “Iconic Research And Engineering Journals” The shampoo bar with Aloe vera and cinnamon oil improved hair health and protected against fungi without causing skin irritation.