Trimethylolpropane Triacrylate is a chemical compound, a multifunctional monomer.

Chemical name 2,2-bis(prop-2-enoyloxymethyl)butyl prop-2-enoate

Safety
It is an ingredient that could, in contact with the skin, generate severe irritation.
Chhabra, R. S., Mahler, J., Bristol, D. W., Bucher, J. R., French, J. E., Hailey, J. R., ... & Serbus, D. C. (2005). NTP Genetically Modified Model Report on the Toxicology Studies of Trimethylolpropane Triacrylate (Technical Grade)(CASRN 15625-89-5) in F344/N Rats, B6C3F1 Mice, and Genetically Modified (FVB Tg. AC Hemizygous) Mice (Dermal Studies).

What it is used for and where
Cosmetics
Film-forming agent. It produces a continuous ultra-thin film with an optimal balance of cohesion, adhesion and stickiness on the skin or hair to counteract or limit damage from external phenomena such as chemicals, UV rays and pollution.

Hair conditioning agent. A large number of ingredients with specific purposes can co-exist in a hair shampoo: cleansers, conditioners, thickeners, mattifying agents, sequestering agents, fragrances, preservatives, special additives. However, the indispensable ingredients are the cleansers and conditioners as they are necessary and sufficient for hair cleansing and manageability. The others act as commercial and non-essential auxiliaries such as: appearance, fragrance, colouring, etc. Hair conditioning agents have the task of increasing shine, manageability and volume, and reducing static electricity, especially after treatments such as colouring, ironing, waving, drying and brushing. They are, in practice, dispersing agents that may contain cationic surfactants, thickeners, emollients, polymers. The typology of hair conditioners includes: intensive conditioners, instant conditioners, thickening conditioners, drying conditioners.

Hair fixative. This ingredient has the ability to create, with its protective film, stiffness and hold in the hair, and also has the ability to form, with its hydrophilic and elastic properties, bonds between the hair fibres, to keep the hair in a particular shape for a certain time.
Synonyms: EC number 239-701-3

CAS: 15625-89-5