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Phenyl Trimethicone

* A versatile silicone derivative

* Please read TIA's post on What Is It: Silicones and Should We Avoid Them


Phenyl Trimethicone is a derivative of silica, or silcione, and is used in cosmetics and beauty products as an anti-foaming agent, hair conditioning agent, and skin-conditioning agent (Cosmetic Database). It reduces the tendency of formulas to generate foam when shaken, and increases hair's body, suppleness, and sheen, by improving the texture of hair that has been damaged by chemical treatment, according to

Phenyl Trimethicone provides heat resistance in haircare applications, as well as non-oily "emolliency and anti-whitening properties in antiperspirants" (National Institutes of Health). It also slows the loss of water from the skin by forming a barrier on the skin’s surface.

Safety Measures/Side Effects:

Phenyl Trimethicone is considered a safe ingredient; the Cosmetic Database rates it as a low hazard and it is CIR approved, although data gaps are noted. Although silicone compounds can be toxic if ingested (and when injected, in some cases), and have been shown to cause allergic reactions in some studies, Phenyl Trimethicone, when applied topically in hair care and skin care products is generally considered safe.

Recommended Products w/ Phenyl Trimethicone:

YBF Correct, Skinn Reorganize Night Eye Balm Wrinkle Balm Night TreatmentAveeno Positively Ageless Night Cream

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