Proalgen Biotech Ltd. offers natrotene. We provide natural products. Our natrotene is produced from the marine algae, dunaliella salina using a highly proprietary and patented process. Our product Natrotene? - 10% DC is used as a dietary supplement, food fortifier, and as a multi-antioxidant formula base. Our Natrotene? - 20% powder is proprietary formulation containing cis and trans isomers of natural betacarotene.