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Sun care cream
i am making sun care cream. I would like finish product have spf 30. I have somes UV raws like Ethylhexyl Methoxycinnamate, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Benzophenone-4, Titannium dioxide. Could you help me ratio of each raw that I have spf 30.
Thanks so much
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