March 2023 in “Kemija u Industriji” Castor oil is suitable for use in cosmetics and pharmaceuticals because of its properties.
February 2026 in “Cureus” Castor oil may improve hair and skin health with minimal side effects.
February 2021 in “Journal of the Korean Society of Cosmetology” Castor oil improves the texture of bleached hair by increasing its strength.
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December 2020 in “International Journal of Biological and Chemical Sciences” Coconut and palm kernel oils could be effective ingredients in black hair shampoos.
March 2026 in “World Journal of Biology Pharmacy and Health Sciences” The polyherbal hair oil is stable, cosmetically acceptable, and a potential natural alternative to synthetic hair products.