| 摘要 |
A method for protecting against UV radiation includes the steps of extracting a cyanin from a plant and applying it to the skin to act as a sunshield. In the preferred embodiments, the plant cyanin is selected from anthocyanin and betacyanin. Optionally, the plant cyanin is derived from a tropical plant, illustratively including the palm family, tropical fruit and nut bearing plants and flowering plants. A sunscreen composition is provided including a plant derived cyanin and a skin-compatible carrier. Optionally, the cyanin is selected from an anthocyanin and a betacyanin, which is present at a concentration ranging from 0.05% to 75% of the weight of the total composition. A sunscreen composition includes the skin-compatible carrier at a concentration ranging from 25% to 99.95% of the weight of the total composition. As a further option, a sunscreen composition includes an ingredient selected from a buffering agent, an emulsifier, a carrier, a fragrance component, a preservative, a solvent, an emollient, a pH adjusting agent, an antioxidant, a propellant, a surfactant, a thickener, a neutralizer and a mixture of any of these.
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