Abstract

LAWSONIA INERMIS L. (HENNA): A COMPREHENSIVE REVIEW OF ITS THERAPEUTIC POTENTIAL, PHYTOCHEMISTRY, AND RISKS OF CHEMICAL ADULTERATION

Vaishnavi Dinesh Sarmalkar*, Palvi Satish Kamat, Dr. Naomita Dhume, Maria Seelan Nadar, Sakshi Suryakant Shinde and Asfina Shaikh

Abstract

Henna, scientifically known as Lawsonia inermis L. or Lawsonia alba is a plant used in various industries for the purpose of beautification, prevention as well as for therapeutic effects. It has a wide range of Phytochemicals and essential oils present in it. The main chemical constituent called Lawsone giving it the distinct color with odor and an astringent fragrance. Due to the presence of Lawsone, henna leaves acquire dyeing property that leaves a reddish orange color on application on skin or hair. It also has proven to have therapeutic properties like Anti-microbial, Termiticidal and Anti-Alzheimer’s property. In recent years, more importance is given towards standardization and evaluation of herbal marketed products, as different companies use different active constituents for its formulations which are not claimed on the label and hence regulatory issues and its efficacy and safety concerns arise. Henna has also known for showing non-toxic and eco-friendly nature due to which it is used in dyeing industries. Comparative analysis of various henna products from different regions, its bioactive properties, adulterations and safety are some of the points focused in the following review article. One of the possible chemical adulterants for henna is Para-phenylenediamine, that is added to enhance the dyeing property of henna, but is a Carcinogen.

Keywords: Henna, Lawsone, Therapeutic, Adulterant, Para-phenylenediamine.