The production of textiles is the second most polluting industry worldwide. Non-biodegradable petroleum-based dyes, toxic compounds to fix colors on textiles, and release large quantities these colorants complicated agents into neighboring environment are key causes this issue. On other hand, natural dyes chemicals prevalent in nature with eco-friendly properties. These recyclable biodegradable...

This paper examines some of the existing methods for colouring the hair and skin using natural material (such as henna) and proposes a parallel technology that exists in the dyeing of wool and fabrics to extend the colour range. Many of the listed plants and their derivatives are not found in Annex IV of the Cosmetic Directive and may not be used as colours, however, they do have other properti...

Comet assays were carried out to evaluate DNA damage in human lymphocytes from 20 volunteers before and after hair dyeing. DNA damage in lymphocytes was found to be slightly higher in volunteers after hair dyeing. Tail moments before and after hair dyeing were 1.47 +/- 0.41 and 1.75 +/- 0.29 respectively (p<0.0008). DNA damage in lymphocytes showed significant difference with treatment and heat...