Home Cosmetic Science Talk Formulating Innovation spf of caffeine and sodium benzoate

  • spf of caffeine and sodium benzoate

    Posted by Derya on October 3, 2017 at 7:04 am

    Hi 

    Does anyone know the SPF of these ingredients. Wasn’t successful finding the answer on the net.

    Thanks

    Derya replied 6 years, 4 months ago 3 Members · 5 Replies
  • 5 Replies
  • bill_toge

    Member
    October 3, 2017 at 9:24 am

    negligible, I should think; their UV/visible absorption spectra lie almost entirely in the UVC range (which is absorbed by the atmosphere), and they absorb nearly no UVA or UVB

  • Derya

    Member
    October 5, 2017 at 8:32 am

    https://academic.oup.com/carcin/article/28/1/199/2476224/Caffeine-and-caffeine-sodium-benzoate-have-a

    Many websites with the same research but no measure of SPF anybody else aware of more info?

    Thanks Bill for your input.

  • microformulation

    Member
    October 5, 2017 at 3:26 pm

    Regardless of an assayed SPF value, it isn’t an approved sunscreen active which renders the testing moot.

  • bill_toge

    Member
    October 6, 2017 at 5:11 pm

    and reading the paper more closely, it seems this combination of ingredients inhibits UV-induced carcinogenesis, which doesn’t necessarily mean it has an actual measurable SPF

  • Derya

    Member
    October 6, 2017 at 11:46 pm

    Ok Thanks bill & Mark

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