Cosmetic Science Talk

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Home Cosmetic Science Talk Formulating Nanoemulsions

  • johnb

    Member
    October 21, 2016 at 9:03 am

    Seems a bit battered to have only a 5% price reduction from new.

  • beautynerd

    Member
    October 21, 2016 at 3:07 pm

    Indeed, there are a few cheaper ones. Based on the manual online, I’m guessing this one is from 1998. The cheapest new models I could find are in the 3k range. 

    Sounds like it should work although it’s a bit unclear as to whether a microtip will be able to emulsify say a 500 ml sample size on its own. Wondering if I need a different horn/tip set-up…

  • Bobzchemist

    Member
    October 21, 2016 at 3:17 pm

    It’s easy to create emulsifier-free nanoemulsions. Getting them to stay stable for more than 3 or 4 minutes, however, is a real challenge.

  • beautynerd

    Member
    October 21, 2016 at 3:30 pm

    @BobzchemistWould having hydroxypropylmethyl cellulose predispersed in the aqueous phase, sonicated the two phases and then heating to just past the gellification temp of hpmc to “set” it work?

  • beautynerd

    Member
    October 21, 2016 at 3:33 pm

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