Forum Replies Created

  • Joshlin

    Member
    April 11, 2023 at 9:04 pm in reply to: milk kefir in cosmetics

    Of course you can, but the benefits will be hard to pin down. The probiotics will be deactivated by the preservative. The benefits will most likely be limited to moisturization as a factor of the lipids and fatty acids in dairy products. Probably not worth it

  • Joshlin

    Member
    March 28, 2023 at 10:31 am in reply to: Post Emulsification techniques

    I actually think it’s important to specify to some extent the emulsification agents so that this question may make more sense. Accepted plant based emulsification ingredients that are not the production of isolation/lab extraction techniques suffer from a similar problem in that they all require heat, sometimes high, to formulate with. Lecithin + plant wax is an accepted, stable emulsion forming, and popular combination offered by suppliers. The most economical plant waxes include soy wax and rice bran wax. Some natural certifications require use such agents.

    However, when formulating with heat sensitive compounds, there is the problem that the water portion is potentially required to be heated in some cases (depending on the wax) all the way up to 190 degrees F. It’s not the end of the world, but it would produce a less potent product. To get a thick product without heating to such temperatures would probably be impossible. But perhaps, if the desired product is a light lotion, and you start with a very thick cream and then add the water phase, you could get that light lotion without the added heat!

  • Joshlin

    Member
    September 20, 2022 at 3:28 am in reply to: Soap nut surfactant as dispersing agent

    chile yall rly dont know the answer to this

  • Joshlin

    Member
    April 11, 2023 at 9:01 pm in reply to: milk kefir in cosmetics

    A rude, unnecessary, and weird response.

  • Joshlin

    Member
    March 28, 2023 at 11:07 pm in reply to: Post Emulsification techniques

    Can you briefly elaborate on the chemistry behind this? Pardon my lack of knowledge. Is this a function of the reduced melting point of the solution? E.g., melting point of wax is 180F, water is liquid above 32F, so as you combine them and then initiate the emulsion, the melting point of the total solution reduces to a point where you can add more water at lower temps and it will still ‘react’ with the emulsification agent/system? Or does it have to do with the droplet mass? Or something else? I just want to better understand for the future.

    And the ‘keep high shear mixing to a minimum’ part… Why would this be the case? Given that you would want the actives/compounds in the water phase to be dispersed and incorporated as evenly as possible within the emulsion. Wouldn’t you want to keep the shear on high?

  • Joshlin

    Member
    March 28, 2023 at 6:32 pm in reply to: Post Emulsification techniques

    The problem is that I am looking to add the bulk of the water phase after the emulsion has already been created, as it is heat sensitive. Typically emulsions involving plant waxes require both the water and wax phases to be heated to over 180F and emulsified at that temperature before cooling. I am just asking about techniques to add most of the water phase at the lowest possible temperature. I am hypothesizing that once the emulsion is formed at 180F with maybe 15% of the total water phase, and is in a very thick consistency, that I could continue stirring in the rest 85% of the water phase as the temperature cools. Perhaps that would lead to a ‘lotion’ type product instead of a thick cream, but the temperature sensitive compounds won’t be affected.