Isostearyl Isostearate
The details
Isostearyl Isostearate is a plant-based and vegan emollient ester made by reacting Isostearyl Alcohol and Isostearic Acid . It helps improve how the product spreads on skin, acts as a binding agent for makeup powders without modifying pigment color, and softens skin while helping it hold onto water. This ingredient is very interesting as a hydrator; most moisturizers are either occlusives, humectants, or emollients. Isostearyl isostearate works through another route named "internal occlusion" by the head researcher. Isostearyl isostearate nudges the skin's own lipids into a denser, more tightly packed arrangement. Packing the deeper layers of the stratum corneum together more efficiently means less water is able to escape. This is a barrier-improving mechanism that hadn't been described before and plastic occlusion stress tests confirmed it improved the skin's water-permeability barrier function Just one thing worth noting from the same review: this ingredient increased the penetration rate of a test drug through excised human skin. Though this ingredient is not classified as a penetration enhancer, it does interact with the barrier rather than sitting totally inert on top. Fungal acne: The Malassezia yeast feeds on fatty acids and esters in the C11-24 range. Since both halves of this molecules are C18, it may not be fungal acne safe.
Effects
Found in (2 products)
Also listed as
isostearyl isostearate