Isostearoyl Trimellitic Anhydride/Trimethylolpropane Copolymer is a chemical compound, copolymer of the monomer trimellitic anhydride and produced with dry solvent in an inert, distilled gas, esterified with catalyst.
What it is used for and where
Cosmetics
Skin protectant. It creates a protective barrier on the skin to defend it from harmful substances, irritants, allergens, pathogens that can cause various inflammatory conditions. These products can also improve the natural skin barrier and in most cases more than one is needed to achieve an effective result.
Skin conditioning agent - Emollient. Emollients have the characteristic of enhancing the skin barrier through a source of exogenous lipids that adhere to the skin, improving barrier properties by filling gaps in intercorneocyte clusters to improve hydration while protecting against inflammation. In practice, they have the ability to create a barrier that prevents transepidermal water loss. Emollients are described as degreasing or refreshing additives that improve the lipid content of the upper layers of the skin by preventing degreasing and drying of the skin. The problem with emollients is that many have a strong lipophilic character and are identified as occlusive ingredients; they are oily and fatty materials that remain on the skin surface and reduce transepidermal water loss. In cosmetics, emollients and moisturisers are often considered synonymous with humectants and occlusives.
Skin conditioning agent - Miscellaneous. This ingredient has the task of modifying the condition of the skin when it is damaged or dry by reducing its flakiness and restoring its elasticity.
CAS: 1190965-82-2
Safety
The CIR Expert Panel concluded that trimellitic anhydride copolymers are safe in nail products but the data are insufficient to determine safety for use in all other types of cosmetic formulations (1).
