Due to their unique fluid properties, silicones are used to improve the feel, appearance and performance of topical skin care products. Silicones trap debris in your pores by forming a barrier on top of your skin. That barrier can lock in moisture, yes, but it can also trap dirt, sweat, bacteria, sebum, dead skin cells and other debris along with it.
Why It’s Commonly Used: Add texture
Why We’ll Seriously Never Use It: Irritant, carcinogen, toxicity