What year did the Indiana Botanic Gardens start making the Black walnut hulls or shucks hair dye?

Indiana Botanic Gardens has been selling Black Walnut Hulls and other herbal remedies since its inception in 1910. While many of the original formulas are unchanged, the company has also kept up with the latest research in natural healing and offers a wide variety of proprietary herbal formulas. The company still sells Black Walnut Green Hulls Liquid Extract at its BotanicChoice website.