Article last updated: October 15, 2024
Stearyl Citrate, also known by its chemical name 1,2,3-Propanetricarboxylic acid, 2-hydroxy-, octadecyl ester, is a versatile ingredient commonly found in a variety of cosmetic products. This compound is derived from citric acid and stearyl alcohol, both of which are naturally occurring substances. Citric acid is commonly found in citrus fruits, while stearyl alcohol is a fatty alcohol derived from stearic acid, which is often sourced from vegetable oils or animal fats.
The use of Stearyl Citrate in cosmetics has a relatively modern history. As the cosmetic industry evolved, there was a growing demand for ingredients that could provide both functional and sensory benefits. Stearyl Citrate emerged as a popular choice due to its dual role as a skin conditioning agent and an emollient. This means it not only helps to soften and smooth the skin but also enhances the overall feel and application of cosmetic products.
The production of Stearyl Citrate involves a chemical reaction known as esterification. In this process, citric acid reacts with stearyl alcohol in the presence of a catalyst. The result is a stable ester compound that combines the beneficial properties of both its parent molecules. This synthesis allows for the creation of a compound that is both effective and safe for use in a wide range of cosmetic formulations.
In this section, we will delve into the officially recognized cosmetic benefits and uses of Stearyl Citrate:
Stearyl Citrate is primarily known for its skin conditioning properties. This means it helps to maintain the skin in good condition by improving its appearance and texture. When applied in cosmetic formulations, Stearyl Citrate can make your skin feel softer, smoother, and more supple. It works by forming a thin, protective layer on the skin’s surface, which helps to lock in moisture and prevent dryness. This is particularly beneficial for those with dry or rough skin, as it can provide a more hydrated and healthy look.
Another key benefit of Stearyl Citrate is its function as an emollient. Emollients are substances that soften and smooth the skin, making it feel more comfortable and less prone to irritation. Stearyl Citrate achieves this by filling in the tiny gaps and cracks in the skin’s surface, creating a more even and smooth texture. This can be especially useful in products designed for sensitive or irritated skin, as it helps to soothe and calm the skin, reducing the likelihood of redness and discomfort.
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).
Stearyl Citrate is generally considered safe for topical use in cosmetic products. However, as with any ingredient, there are potential side effects and considerations to keep in mind:
Regarding individuals who are pregnant or breastfeeding, data and research on the topical usage of Stearyl Citrate during pregnancy and breastfeeding are lacking. Therefore, it is advisable for these individuals to consult a healthcare professional for further advice before using products containing this ingredient.
Adverse reactions to Stearyl Citrate are relatively uncommon. However, it is always recommended to perform a patch test before widespread usage to ensure that your skin does not react negatively to the ingredient.
In terms of comedogenicity, Stearyl Citrate is rated as a 2 on a scale of 0 (totally non-comedogenic) to 5 (highly comedogenic). This means that while it is unlikely to clog pores for most people, those who are particularly prone to acne, blemishes, or breakouts should use it with caution.
