Trimethylolpropane Tricaprylate/Tricaprate

Trimethylolpropane tricaprylate/tricaprate is a synthetic ester derived from trimethylolpropane (a humectant alcohol) and medium-chain fatty acids (caprylic and capric acid). It is designed to function as an emollient and skin conditioning agent in cosmetic formulations.This ingredient works to soften and smooth the skin surface by forming a protective layer that helps maintain moisture. Because of its molecular structure, it tends to be absorbed readily without leaving a greasy residue, making it suitable for a range of formulation types.

As an emollient, this ingredient penetrates and conditions the outer layers of the skin, helping to seal in moisture and reduce transepidermal water loss (TEWL). Its molecular structure allows it to be absorbed relatively quickly, which is why it does not typically leave a greasy or occlusive film on the skin surface.By conditioning the stratum corneum (the outermost layer), it promotes a smoother skin texture and can help restore a more supple, comfortable feel to dry or dehydrated areas.

This ingredient is typically incorporated into moisturisers, serums, and lotions at concentrations that complement other actives. It tends to work well in both water-based and oil-based formulations and can be layered with other hydrating or treatment products. Use as directed on the product label.

Generally well-tolerated and considered safe for cosmetic use. Unlikely to cause irritation in most individuals, though those with specific sensitivities to esters should patch-test first.