Article last updated: October 15, 2024
Myristyl Isostearate, also known as Tetradecyl Isooctadecanoate, is a synthetic ester derived from myristyl alcohol and isostearic acid. Myristyl alcohol is a fatty alcohol that can be sourced from both plant and animal fats, while isostearic acid is a branched-chain fatty acid typically obtained from the hydrogenation of oleic acid. This combination results in a versatile ingredient that is widely used in the cosmetic industry.
The history of Myristyl Isostearate in cosmetics dates back to the increasing demand for more effective and stable emollients and skin conditioning agents. As the cosmetic industry evolved, there was a need for ingredients that could provide a smooth, non-greasy feel while enhancing the texture and spreadability of products. Myristyl Isostearate emerged as a solution due to its excellent emollient properties and compatibility with various formulations.
The production of Myristyl Isostearate involves a chemical reaction known as esterification. In this process, myristyl alcohol reacts with isostearic acid in the presence of a catalyst, typically an acid or base, to form the ester. This reaction not only combines the beneficial properties of both components but also results in a stable and effective ingredient suitable for a wide range of cosmetic applications.
In this section, we will delve into the officially recognized cosmetic benefits and uses of Myristyl Isostearate:
Myristyl Isostearate is primarily known for its skin conditioning properties. This means it helps to keep your skin in good condition by improving its appearance and texture. When applied to the skin, it can make it feel softer and smoother. This is particularly beneficial for those with dry or rough skin, as it helps to restore a more supple and hydrated feel.
Another key function of Myristyl Isostearate is its role as an emollient. Emollients are substances that soften and moisturize the skin, reducing dryness and flakiness. By forming a protective barrier on the skin’s surface, Myristyl Isostearate helps to lock in moisture, preventing water loss and keeping the skin hydrated. This makes it a valuable ingredient in products designed to combat dry skin and maintain a healthy skin barrier.
Note: the listed benefits above are exclusively based on the officially recognized and defined functions of the ingredient, as documented by the International Nomenclature of Cosmetic Ingredients (INCI).
Myristyl Isostearate is generally considered safe for use in cosmetic products. It is well-tolerated by most skin types and is not known to be a common allergen. However, as with any ingredient, there are potential side effects to be aware of:
Regarding individuals who are pregnant or breastfeeding, data and research on the topical usage of Myristyl Isostearate during pregnancy are lacking. Therefore, it is advisable for these individuals to consult a healthcare professional for further advice.
Adverse reactions to Myristyl Isostearate are relatively uncommon, but it is always recommended to perform a patch test before widespread usage to ensure personal tolerance.
In terms of comedogenicity, Myristyl Isostearate has a rating of 2 on a scale of 0 to 5. This means it has a low to moderate potential to clog pores. Individuals who are prone to acne, blemishes, or breakouts should be cautious when using products containing this ingredient, as it may contribute to pore congestion in some cases.
