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Henna - Research

However, there are currently no human clinical studies on the internal or external uses of henna.
In Egypt and India as well as other Arabic countries, henna was most notably used to dye hair, nails, and other body parts such as the hands and soles of the feet.
Historically, henna leaves were used externally to help treat skin problems, headaches, and inflammation.4  In Asian folk medicine, topical uses included the treatment of dandruff, eczema, scabies, fungus, and ulcers.4  Henna flowers were also employed externally as an astringent for the skin as well as to combat excessive perspiration.3  
Historically, henna was taken orally to induce urination and to treat stomach ulcers.4  
3  Duke JA. Herbs of the Bible. Longmont, CO: Interweave Press; 2000.
4  Jellin JM, ed. Natural Medicines Comprehensive Database. Stockton, CA: Therapeutic Research Faculty; 2002.
5  Wichtl M, Brinckman J. Herbal Drugs and Phytopharmaceuticals. Stuttgart: Medpharm GmbH Scientific Publishers; 2004.
6  Mikhaeil BR, Badria FA, Maatooq GT, Amer MM. Antioxidant and immunomodulatory constituents of henna leaves. Z Naturforsch. July-August 2004;59(7-8):468-476.
7  Endrini S, Rahmat A, Ismail P, Yun Hin T. Anticarcinogenic Properties and Antioxidant Activity of Henna (Lawsonia inermis). J Med Sci. July-August 2002;2:194-197. Available at: http://www.ansinet.org/fulltext/jms/jms24194-197.pdf.

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