Home Cosmetic Science Talk Formulating Advanced Questions Sodium PCA and Caprylyl Methicone thickening reaction, what’s happening?

  • Sodium PCA and Caprylyl Methicone thickening reaction, what’s happening?

    Posted by Zink on September 9, 2016 at 6:28 pm

    I just made a simple emulsion of
    10% Capric / Caprylic Glycerides
    4% Cetearyl Olivate (and) Sorbitan Olivate 
    4% Caprylyl Methicone
    and rest Water.

    Adding 2% Sodium PCA causes the lotion to thicken in a foamy manner, so there’s some reaction between the silicone and SPCA. It can even cause the whole solution to gel, which /could/ be desirable. 

    Any thoughts on whether this is good or bad? The end formulation will be a sunscreen so I wonder if it could affect pigment dispersion in any way.

    Zink replied 7 years, 10 months ago 1 Member · 0 Replies
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