HOME Science A collection of scientific studies that validate Nu Skin’s technology for measuring antioxidant levels through the skin, showing the link between nutrition, lifestyle, and overall health. Access the resources below. Prysm IOValidation PDF PPT Share Reflection Spectroscopyin Living Tissues PDF PPT Share Validating the effectsof multivitamins PDF PPT Share Validation of a NewNon-Invasive RS-Skin PDF PPT Share