Rainbow Light began in 1981 by offering consumers a nutritious spirulina supplement and went on to become the first-ever food-based supplement brand. During nutritional content testing procedures in those early days, their researchers discovered that spirulina, when exposed to a light spectrophotometer, refracted all the colors of the rainbow. Sourcing the purest, highest quality ingredients is a priority in Rainbow Light's formulating process. Quality assurance measures and standards are implemented at every stage of sourcing raw materials to production and finished goods testing. Rainbow Light mission is to be the performance leader in building a stronger state of health for the customers Rainbow Light has been a leader in the natural products industry for more than 30 years. Herbspro.com is proud to carry the entire range of this fine brand.