The Carotenoid Beta-Carotene Enhances Facial Color, Attractiveness and Perceived Health, but not Act (image) Oxford University Press USA Share Print E-Mail Caption These are examples of color variation between pre- and post-supplementation by Treatment condition. The top photographs show the Beta-carotene participant, The bottom photographs show the placebo participant. The left side is pre-supplementation and the right side is post-supplementation. Credit Yong Zhi Foo Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.