Isostearyl Isostearate

What is Isostearyl Isostearate?

A synthetic diester made from isostearyl alcohol and isostearic acid, providing a rich emollient effect.

Why is it used in products?

It creates a luxurious, moisturizing feel in products and helps form stable emulsions with a smooth texture.

Why does it clog pores?

Isostearyl isostearate has a large, branched molecular structure that forms a persistent occlusive film over pores. This film traps sebum and dead skin cells, creating the perfect environment for comedones to develop. Its heavy emollient properties make it especially problematic for oily and acne-prone skin types.

Commonly found in

• foundations
• moisturizers
• lipsticks
• concealers