Description Black walnut hulls boast a pigment known as juglone, akin to the pigment present in henna leaf, serving as a natural defense mechanism for the tree against diseases and competing vegetation. This compound imparts astringent, antimicrobial, and anti-fungal properties, making it a sought-after ingredient in skincare products and cosmetics like natural hair dye and self-tanning lotions. Additionally, black walnut hulls are utilized to create a natural brown dye for inks, wool, and various textiles.
