Pharmanex is the only brand with SCS certification. SCS certification means that our scientists are confident that this product will raise your skin carotenoid score, or SCS, as measured by the Pharmanex BioPhotonic Scanner. Carotenoids are a class of important antioxidants and can come from a variety of sources, including fruits, vegetables, and your supplements. If a product is SCS-certified, then you can expect that using it will increase your scanner score over time. If you are a healthcare provider and want more information on how you can incorporate this scanner into your practice, email info@agewelladvantage.com