March 2026 in “Zenodo (CERN European Organization for Nuclear Research)” In this study, the researchers described a formulation process for Ratanjot hair oil using Alkanna tinctoria roots, reporting traditional uses of the oil in preventing hair loss, baldness, premature greying, and promoting hair growth, but did not present empirical results.
June 2024 in “Institutional Repository of the Federal Technological University of Paraná (RIUT) (Federal University of Technology – Paraná)” This study assessed Mapu Cosméticos' business plan for producing castor bean-derived products, projecting a net profit from year two and indicating financial feasibility with a favorable Net Present Value and Internal Rate of Return.
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January 2017 in “International journal of trichology” This case study reports that sudden hair matting occurred in a patient after using coconut and castor oils on long hair, requiring the hair to be cut off due to irreversible felting.
August 2026 in “Zenodo (CERN European Organization for Nuclear Research)” This narrative literature review by Lustrao synthesizes existing research on six botanical ingredients used in Lustrao Hair Regrowth Oil, noting varying evidence levels with rosemary oil showing the clearest human clinical support for hair growth, particularly against minoxidil.
August 2026 in “Zenodo (CERN European Organization for Nuclear Research)” This narrative literature review by Lustrao examines the existing research on six botanical ingredients in their Hair Regrowth Oil, finding varied evidence levels and highlighting rosemary oil's strong human clinical support for hair growth compared to minoxidil.