Notwithstanding law to the contrary, the act of a duly licensed massage therapist in performing a massage shall be deemed to be medically therapeutic in nature and shall not be subject to the collection of any form of state or local taxation regulations not also imposed on other medically therapeutic activities. Additionally, a massage performed on or before October 1, 1995, by a person who becomes licensed in accordance with this chapter shall also not be subject to the collection of any form of state or local tax not also imposed on other medically therapeutic activities.