Some vegetable oils have many biological properties, including UV-absorbing capacity.\nTherefore, their use has been suggested to reduce the content of organic UV-filters in sunscreen\nproducts. In this work, we investigated the feasibility of developing oil-based vehicles with a high sun\nprotection factor (SPF) using pomegranate oil (PMG) and shea oil (BPO) in association with different\npercentages of organic UV-filters (octyl- methoxycinnamate, butyl methoxydibenzoylmethane, and\nbemotrizinol). We characterized the spreadability, occlusion factor, pH, and required hydrophilic\nlipophilic balance of the resulting formulations, and did not observe relevant differences due\nto the incorporation of vegetable oils. The in vitro spectrophotometric determinations of SPF\nvalues highlighted that the addition of BPO (1% (w/w)) and PMG (1% (w/w)) resulted in an\nincrease in SPF in comparison with the same formulations that contained only organic UV-filters.\nThe SPF increase was more significant for the formulations that contained lower amounts of organic\nUV-filters. The results of this study supported the hypothesis that including suitable vegetable oils in\nsunscreen formulations could be a promising strategy to design products with a lower content of\norganic UV-filters.
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