Isostearyl Neopentanoate is a synthetic fatty acid ester widely used in cosmetic and personal care formulations for its emollient, skin-conditioning, and binding properties. It helps improve skin feel, spreadability, and the application characteristics of finished products. Its oil-compatible structure makes it useful in formulations where smooth application, lubrication, and a lightweight sensory profile are desired.
This cosmetic ingredient can be evaluated for moisturizers, facial creams, makeup products, lipsticks, primers, sunscreens, balms, and other suitable oil-containing formulations. Depending on the complete formulation, it may help reduce the perception of drag during application and support a soft, smooth finish.
For cosmetic manufacturers, Isostearyl Neopentanoate offers a way to modify the sensory performance of an oil phase while complementing other emollients, waxes, oils, and functional ingredients. The appropriate grade and concentration should be established through formulation trials and supplier documentation.
Isostearyl Neopentanoate is an ester of isostearyl alcohol and neopentanoic acid, also known chemically as 2,2-dimethylpropanoic acid. Its INCI name is Isostearyl Neopentanoate.
The ingredient is lipophilic and generally insoluble in water. It is therefore most relevant to oil phases, anhydrous products, and emulsions that incorporate oil-soluble cosmetic ingredients. In a finished product, it functions primarily as an emollient and skin-conditioning agent, while also serving a binding role in suitable formulations.
Its branched-chain ester structure distinguishes it from other commonly used cosmetic esters. Although several emollients may perform similar functions, their spreading characteristics, compatibility, and final skin feel can differ.
1. Emollient Performance
Isostearyl Neopentanoate helps soften the skin surface and improves the feel of cosmetic products. It can be incorporated into formulas designed to provide a smooth, conditioned finish.
2. Improved Spreadability
The ingredient contributes lubrication during product application. Depending on the formulation, it can help products spread more evenly and reduce the perception of drag.
3. Skin Conditioning
As a skin-conditioning agent, it supports the sensory qualities of leave-on cosmetic products. It can be combined with other emollients to develop a targeted skin feel.
4. Texture and Sensory Modification
Isostearyl Neopentanoate can influence how a product feels during application and after spreading. Its performance depends on the overall balance of emollients, waxes, thickeners, and other formulation ingredients.
5. Oil-Phase Compatibility
Its lipophilic nature makes it suitable for oil-based products and the oil phase of emulsions. It should not be expected to dissolve directly in water.
6. Formulation Versatility
It can be considered for skin care, colour cosmetics, lip care, and selected sun care formulations, subject to the grade's suitability and finished-product testing.
Isostearyl Neopentanoate is generally incorporated into the oil phase of a cosmetic formulation. Its use should be guided by the selected grade's technical documentation and the requirements of the finished product.
Isostearyl Neopentanoate should not be treated as interchangeable with every other ester. A change in emollient can affect spreading, gloss, viscosity, stability, and the overall sensory profile.
When evaluating Isostearyl Neopentanoate for cosmetic manufacturing, consider the following quality and procurement requirements:
Product-specific properties and documentation should be verified for the actual grade being purchased.
Isostearyl Neopentanoate is a specialty cosmetic ester used in formulations that require emolliency, skin conditioning, and improved application characteristics. It can be evaluated for moisturizers, creams, makeup, lip care, and other compatible personal care products.
Cosmetic manufacturers should confirm the ingredient identity, technical specification, batch documentation, and suitability for the intended application before use. Laboratory testing is recommended before commercial-scale production.
1. What is Isostearyl Neopentanoate?
Isostearyl Neopentanoate is a fatty acid ester used in cosmetics primarily as an emollient, skin-conditioning agent, and binder.
2. What is the CAS number of Isostearyl Neopentanoate?
The commonly listed CAS number is 58958-60-4. Confirm the identifier against the exact commercial grade and its documentation.
3. What is the molecular formula of Isostearyl Neopentanoate?
Its molecular formula is C₂₃H₄₆O₂.
4. What is the molecular weight of Isostearyl Neopentanoate?
Its molecular weight is approximately 354.6 g/mol.
5. Is Isostearyl Neopentanoate soluble in water?
It is generally insoluble in water because of its lipophilic ester structure.
6. What is Isostearyl Neopentanoate used for in cosmetics?
It is used to provide emolliency, skin conditioning, lubrication, and improved application characteristics in suitable cosmetic formulations.
7. Can Isostearyl Neopentanoate be used in makeup products?
It can be evaluated for foundations, primers, lipsticks, and other colour cosmetics where its emollient properties and compatibility suit the formulation.
8. Can Isostearyl Neopentanoate be used in creams and lotions?
Yes, it can be considered for the oil phase of suitable emulsions, subject to compatibility and stability testing.
9. How should Isostearyl Neopentanoate be stored?
Follow the storage conditions stated in the current supplier documentation and keep the container tightly closed.
10. Which documents should be checked before purchasing Isostearyl Neopentanoate?
Review the TDS, COA, safety data sheet, ingredient identity, batch information, and grade-specific quality requirements.
| Parameter | Specification |
|---|---|
| Appearance | colourless liquid |