The roots from species of the yucca plant are often used to make an herbal shampoo. The roots of the yucca plant, also referred to as mole, contain the saponin compound, which has properties that are similar to detergent. Once you've harvested and pulverized the yucca root, you can lather it with water to use the pulp as a soap or a shampoo. Also, excess yucca pulp can be stored in the freezer so that you can don't have to continue cutting up small portions of the roots.
Check with your state and local laws before harvest yucca roots in your area as the rules for collecting wild plants vary from state to state. When you know you can harvest it, you can locate yucca in your area at any time when the ground is not frozen.
Find a medium-sized yucca plant and dig up the roots using a small gardening shovel. Use a small hatchet to safely remove the roots from the top part of the plant and then use a vegetable brush or cloth to remove all of the loose dirt from the roots.
Cut the root into small chunks using the hatchet or a sharp knife. Use a hammer or powerful blender to get the roots to a more paste-like consistency.
Add 1/4 cup of water to your yucca paste to help it have more of a consistency of shampoo. Place a small amount of the yucca shampoo on your skin to make sure you don't have any allergic reaction to the yucca.
Mix a handful of the yucca pulp with running water. For best results you can allow for a balanced mixture of water and the yucca pulp to become a sudsy consistency in your sink and then apply the mixture to your hair while rinsing.