Cassia Obovata is often called neutral henna but cassia, unlike henna, has no dye content but contains Chrysophanic Acid (a natural anthraquinone also found in Rhubarb root and used for highlighting gray hair) which will colour light hair (gray, white or blond) a pale yellow colour. Our cassia obovata powder is from organic fields in India and is great as a natural hair dye conditioner for blonde colour hair, whether natural or chemically treated because it will just enhance the natural colour but it is always advisable to test before applying. Dark hair will not be affected by the acid in cassia instead it will be left thickened and glowing. Cassia strengthens hair roots stimulating hair growth and thickens hair leaving it strong and healthy.