What it is
This ingredient is a triglyceride formed from glycerin esterified with caprylic (C8), capric (C10), and myristic (C14) fatty acids. The added myristic chain gives it a slightly richer character than standard caprylic/capric triglyceride while keeping a smooth, non-greasy slip. In sunscreens it serves as an emollient carrier oil that conditions the skin and helps spread and disperse oil-soluble UV filters and pigments.
Safety & warnings
It is generally well tolerated and widely used as a cosmetic emollient. Because it contains a myristic (C14) component, individuals who are very acne-prone may wish to note that some longer-chain emollients can feel heavier on the skin, though comedogenicity varies by formula.
Origin & sourcing
It is produced synthetically by esterifying glycerin with fatty acids that are typically derived from plant oils such as coconut or palm.
Questions everyone asks
How is this different from caprylic/capric triglyceride?
It is the same type of light ester oil but with an added myristic (C14) fatty acid, which gives it a slightly richer texture and cushion compared with the standard caprylic/capric version.
Why is it used in sunscreen?
It is an emollient that softens skin and helps evenly disperse oil-soluble UV filters and pigments, improving the texture and spreadability of the product.