• Formulating

  Solubilizer ratio for chemical sunscreens

  Posted by Shaniverm on November 13, 2023 at 8:05 am

  Help please: I would like to formulate an SPF 50 chemical sunscreen which, because of this, contains a large % of filters. In order to ensure best solubilization of these, what would the ball park ratio of C12-15 alkyl benzoate have to be to the total quantity of sunscreen filters?

  Shaniverm replied 5 months ago 2 Members · 2 Replies

  • chemical sunscreens
  • sunscreen filters
• 2 Replies

• 

  chemicalmatt

  Member

  November 17, 2023 at 10:57 am

  This all depends on the solid-state UV absorbers you are using. All have different solubilities and you will need to experiment. I’ll add that some are soluble in their liquid state partners. I.e. avobenzone is soluble in octicrylene and homosalate.

  • 

    Shaniverm

    Member

    December 14, 2023 at 4:25 am

    Thanks - now that we have received all the sunscreen samples we need, we will experiment….

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