• Innovation

  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 7 years, 6 months ago 3 Members · 5 Replies
• 5 Replies

• 

  Bill_Toge

  Professional Chemist / Formulator

  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

  Professional Chemist / Formulator

  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.

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  Bill_Toge

  Professional Chemist / Formulator

  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

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  Derya

  Member

  October 6, 2017 at 11:46 pm

  Ok Thanks bill & Mark

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