Best For Skin Types
Dry, Combination, Mature
Addresses
Usage Frequency
Daily
What Is Pentaerythrityl Tetracaprylate/Tetracaprate?
Pentaerythrityl tetracaprylate/tetracaprate is a synthetic ester derived from pentaerythritol (a sugar alcohol) and caprylic/capric acids (medium-chain fatty acids). It functions as an emollient in skincare formulations.
As an emollient, this ingredient works to coat the skin surface, helping to reduce water loss and create a smoother texture. It is used in relatively small concentrations and appears in a small proportion of skincare products.
How It Works
Pentaerythrityl tetracaprylate/tetracaprate is an occlusive emollient. When applied to the skin, it forms a light protective layer that slows water evaporation from the epidermis. This helps maintain skin hydration and can improve the appearance of dry or rough patches.
Because it is a synthetic ester rather than a natural oil, it tends to have a lighter feel than many plant-based emollients, making it suitable for formulations where a less heavy texture is desired.
Clinical Evidence & References
Published research on this specific ingredient is limited. One case report documented allergic contact dermatitis in an individual exposed to this ingredient, indicating that whilst generally well-tolerated, contact sensitisation is possible in susceptible individuals.
Beyond this documented case, broader evidence on its efficacy or safety profile in the general population is sparse. Most of what we know about its behaviour comes from its use in cosmetic formulations and its chemical classification as a known emollient.
How to Use
This ingredient is typically used at low concentrations within a complete formulation, so you are unlikely to encounter it as a standalone product. It is best used as part of a moisturiser or emollient cream, applied to damp skin to help seal in hydration. There are no particular restrictions on frequency of use, though as part of a moisturiser it would typically be applied once or twice daily depending on your skin's needs.
Safety & Precautions
Frequently Asked Questions
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