Polymethylsilsequioxane

Polymethylsilsequioxane, also known as PMMA, is derived from silicone resin and is a synthetic ingredient used in skincare as a film-forming agent and texturiser. It is commonly found in make-up products and sunscreens as it is resistant to being washed off and it provides a luminous silky, smooth feeling film on the skin. PMMA is also known for its oil-absorbing properties to help control shine and reduce the appearance of pores, making it a popular choice for those with oily or acne-prone skin. Being synthetic, it does have potential side-effects including irritation and allergic reactions.