• Bobzchemist

    Member
    October 1, 2014 at 1:49 pm

    To do what, exactly?

  • JD

    Member
    October 3, 2014 at 12:43 am

    Substitute for eye shadow

  • Bobzchemist

    Member
    October 3, 2014 at 10:46 am

    Helpful info, but still not sufficient - I still need some more info:

    1) Why do you want to take out the nylon, i.e., is it too expensive, or are there other reasons? Do you need a “natural” ingredient or can I suggest synthetics? Can I suggest other nylon grades?  other plastics? 
    2) Is the nylon 12 you want to replace a spherical powder or a fiber?

    3) What function is the nylon 12 performing in your eyeshadow that is most important?
    4) Is your eyeshadow a pressed powder, a loose powder, or a liquid?

    Last, but hardly least - Do you just want a few raw material suggestions, or do you want to find out how to do the research to get this info yourself?
  • JD

    Member
    November 30, 2014 at 7:10 pm

    Hi Bob,

    Sorry for the delay. 
    1) I want to see what my alternatives are. 
    2) Its used in an make up “eye” product I am looking at so I think it is spherical powder
    3) Function would be texture and non caking
    4) This eye shadow is pressed.
    I am an info junkie so I always like to know “how to” ;)
  • pma

    Member
    November 30, 2014 at 9:40 pm

    Yu can simply observe some eye shadows in the market that don’t contain Nylon-12:

    Eg.: Shiseido The Makeup Luminizing Satin Eye Color
    Mica, Talc, Tianium Dioxide (CI 77891), Petrolatum, Polyethylene, Triethylhexanoin, Zinc Oxide (CI 77947), Ultramarines (CI 77007), Iron Oxides (CI 77492), Sorbitan Sesquisostearate, Dimethicone, Zinc Myristate, Iron Oxides (CI 77491), Polysilicone-2, Ethylhexylglycerin, Chlorphenesin, PEG/PPG-36/41 Dimethyl Ether, Silica, Tocopherol, Dipentaerythrityl Hexahydroxy, Stearate, Methicone, Tetradecene; May Contain: Ferric Ferrocyanide (CI 77510), Iron Oxides CI 77499].


  • JD

    Member
    December 1, 2014 at 1:14 am

    Got it, thank you!

  • Bobzchemist

    Member
    December 1, 2014 at 4:34 pm

    OK, so here goes. 

    Nylon 12, as a micro-spherical powder, is used as a feel enhancer and as a release aid for pressed powders (You do want to get the powder back out of the pan after you press it in, right?). The feel enhancement is 80-90% derived from the shape, and about 10-20% from the resiliency and oil absorption of the beads. Micro-spherical powders can be made from a number of different materials - PMMA, Silica, Polyethylene, Polyurethane, Teflon, Ceramic, etc. They all do essentially the same thing. Look up “cosmetic microspheres” and you should get a bunch of information. Also look into hybrid particles.
    One of my favorite alternatives to using regular microspheres is using mica coated with a layer of ultra-small silica microspheres. It used to be called “Micronasphere M” but it’s now called Ronaflair M-Sphere - amazing stuff. (Interesting note from my silica days - it’s actually physically impossible to have non-agglomerated silica microspheres as small as the ones used in the M-Sphere exist on their own without a substrate.)

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