Home Cosmetic Science Talk Formulating SPF booster and Water-resistance

  • SPF booster and Water-resistance

    Posted by ChemWizard on February 23, 2014 at 10:23 pm

    What’s your one favorite ingredient for so called Natural formulas which gives Water resistance 60 min and even boosts SPF value.
    This ingredient should be efficient even in O/W emulsions.

    Looking to hear from your experiences!

    cosmochem replied 9 years, 9 months ago 3 Members · 2 Replies
  • 2 Replies
  • Bobzchemist

    February 24, 2014 at 10:08 am

    I’m a huge fan of Ganex WP-660, but I don’t think you could call it natural. I don’t think “natural, “water-resistant”, and “sunscreen” are going to co-exist well - any two of the three could work, though.

    In the US, sunscreens can either be 40 minutes or 80 minutes water-resistant. Claiming 60 minutes is misbranding.
  • cosmochem

    February 25, 2014 at 1:56 pm


    I like the Ganex V-220 (VP/Eicosene co-polymer) for water resistance but as Bob said it it not natural.
    But you can try Meristant series from Essential ingredients. These are Hydrogenated Pine Alkaloids and they market them as Green Chemistry, so you can try them as alternatives for Ganex to provide water resistance. In addition to these some emulsifiers like Potassium Cetyl Phosphate also contribute to water resistance.
    Hope this helps!!!!!!

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