How does the color of henna fade?

Question

Henna contain lawsone pigment that attaches to the proteins of the skin,hair,etc.But after a few weeks the color fades?How does the color fade?Is the pigment volatile or it is degraded by the body?[Henna]:https://hennacolorlab.com/what-is-henna/

Answer 1

Henna dye stains the outermost skin cells. These outermost cells are mostly dead and full of a protein called keratin; the outermost skin cells are shed regularly throughout the day.

Your body makes new skin cells in the deeper layers of your skin and they travel up to the outermost layer to replace your dead cells. Henna dye will probably be shed with the dead cells and then new skin cells that are not stained with Henna come up to replace the stained skin.