A Comprehensive Review on the Use of Walnut Husk Extract as a Natural Hair Dye

Abstract

The use of synthetic hair dyes has led to many problems like early greying of hair, allergies and in severe cases cancer too. This has led to the introduction of natural hair dyes from henna and other plant material like Bhringraj, Shikakai, Reetha, etc., in the market. But it has poor rinsing properties and gives copper-red instead of natural brown colour. Thus we have found that walnut husk has Juglone an aromatic compound which imparts yellowish brown to dark brown shade to hair. The various extraction methods were discussed above and tests for chemical constituents in extracts were analysed. The dyeing properties like fading, colour fastness, colour intensity, and retention time are also tested. It has been found that walnut gives the best results when used with fixative as FeSO4; also use of mordant gives good results.