ObjectivesRecent technology improvements have allowed measurement of carotenoid pigments utilizing simple reflection spectroscopy fingertip measurements (Veggie Meter®) (1). We used this technique to measure the effect of ingestion of three different dietary supplements containing carotenoids of different types and potencies: Vision Health with Lutein, Multi Carotene (beta carotene, alpha carotene, lutein, zeaxanthin), or Concentrated Fruits & Vegetables (lutein, lycopene) (2). MethodsIn an open label study, a total of 24 volunteers (8 for each of the study products) consumed the supplements daily according to label recommendations. Veggie Meter® measurements were taken on Day 0 and Weeks 2, 4, 6, 8, 10 and 12. Supplements were consumed for the first 6 weeks and then were discontinued for the following 6 weeks. Questionnaires were used at baseline, 6 and 12 weeks to obtain a brief history of supplement usage and fruit/vegetable intake. ResultsIn most subjects, the veggie meter measurement increased from baseline after 6 weeks of supplementation, which then returned towards the baseline in the six weeks after supplementation was stopped. Responses from the three supplements varied in magnitude based on dosage and carotenoid type. There was also noticeable variation in individual responses within each supplement group. ConclusionsReflection spectroscopy fingertip measurements provided data supporting the notion that carotenoids deposit in the skin in response to supplementation with carotenoid containing supplements. This may suggest this method is a useful to monitor carotenoid status and indicate when diet modifications would be beneficial to individuals. Funding SourcesFunding for the study was provided by Access Business Group/Amway.