Q: The definition of a naturally occurring chemical ? A: According to the Australian Department of Health and ageing definition (http://www.nicnas.gov.au/cosmetics/ what_is_a_cosmetic.asp): A naturally occurring chemical means an unprocessed chemical occurring in a natural environment; or a chemical occurring in a natural environment, being a substance that is extracted by: Manual, mechanical or gravitational means; or Dissolution in water; or Flotation; or A process of heating for the sole purpose of removing uncombined water; All without chemical change in the substance Dark Silk is a 100 % plant extract product and manufactured by totally natural procedures according to the above definition.