Article last updated: October 15, 2024
Propylene Glycol Diisostearate, also known as 1-Methyl-1,2-ethanediyl diisooctadecanoate, is a synthetic compound commonly used in the cosmetic industry. This ingredient is primarily sourced from the esterification of propylene glycol with isostearic acid, resulting in a substance that serves as an effective emollient. Emollients are agents that help to soften and smooth the skin, making them a staple in many skincare and cosmetic formulations.
The history of Propylene Glycol Diisostearate in cosmetics dates back to the mid-20th century when the demand for more sophisticated and effective skincare products began to rise. Scientists and cosmetic chemists were on the lookout for ingredients that could provide superior moisturizing properties without causing irritation or greasiness. Propylene Glycol Diisostearate emerged as a promising candidate due to its ability to create a smooth, non-greasy feel on the skin while enhancing the texture and spreadability of cosmetic products.
The manufacturing process of Propylene Glycol Diisostearate involves a chemical reaction known as esterification. In this process, propylene glycol, a type of alcohol, reacts with isostearic acid, a fatty acid derived from natural sources like vegetable oils. The reaction produces a diester, which is then purified and refined to create the final cosmetic-grade ingredient. This meticulous process ensures that the resulting compound is both safe and effective for use in a variety of skincare and cosmetic products.
In this section, we will delve into the officially recognized cosmetic benefits and uses of Propylene Glycol Diisostearate:
Propylene Glycol Diisostearate is primarily used as an emollient in cosmetic formulations. This means it helps to soften and smooth the skin by forming a protective barrier on the skin’s surface. This barrier helps to lock in moisture, preventing the skin from becoming dry and flaky. In simpler terms, it makes your skin feel silky and hydrated, which is especially beneficial for those with dry or sensitive skin.
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).
Propylene Glycol Diisostearate is generally considered safe for use in cosmetic products. 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 Propylene Glycol Diisostearate during pregnancy are lacking. Therefore, it is advisable for these individuals to consult a healthcare professional for further advice.
Side effects and adverse reactions from Propylene Glycol Diisostearate are relatively uncommon. However, it is always a good practice to conduct a patch test before widespread usage to ensure that your skin does not react negatively to the ingredient.
On a comedogenicity scale of 0 to 5, Propylene Glycol Diisostearate is rated at 1, meaning it has a low likelihood of clogging pores. This makes it a suitable option for individuals who are prone to acne, blemishes, or breakouts.
