Northern Mexico Yerba Santa Includes Small Green Abalone Shell for Incense Burning 3x4 inch bag Yerba Santa - Holy Herb also known as the Sacred Leaf. Traditionally used as a smudge or incense for protection and setting boundaries, Yerba Santa has also been used for love, purification, growth, empowerment and beauty, and the release of emotional pain stored in the heart chakra. Uplifting scent. The leaf is used to make medicine. Yerba Santa is used for respiratory conditions including coughs, colds, tuberculosis, asthma, and chronic bronchitis.