Article last updated: October 15, 2024
Polyglyceryl-10 Stearate, also known by its chemical name 1,2,3-Propanetriol, homopolymer, octadecanoates (1:1) (10 mol glycerol average molar ratio), is a versatile ingredient commonly found in cosmetic formulations. This compound is derived from glycerol and stearic acid, both of which are naturally occurring substances. Glycerol, a simple polyol compound, is often sourced from plant oils or animal fats, while stearic acid is a saturated fatty acid typically obtained from vegetable fats.
Historically, the use of glycerol and fatty acids in skincare dates back centuries, but the specific combination of these two to create Polyglyceryl-10 Stearate is a more recent innovation. This ingredient emerged as cosmetic chemists sought more effective and skin-friendly emulsifiers and conditioning agents. Its development was driven by the need for ingredients that could provide hydration and improve the texture of skincare products without causing irritation.
The production of Polyglyceryl-10 Stearate involves a process called esterification, where glycerol molecules are reacted with stearic acid. In this case, ten glycerol units are polymerized and then esterified with stearic acid. This results in a compound that has both hydrophilic (water-attracting) and lipophilic (oil-attracting) properties, making it an excellent emulsifier and skin conditioning agent. This dual affinity allows it to blend oil and water phases in cosmetic formulations, ensuring a smooth and stable product.
In this section, we will delve into the officially recognized cosmetic benefits and uses of Polyglyceryl-10 Stearate:
Polyglyceryl-10 Stearate is primarily known for its skin conditioning properties. This means that it helps to maintain the skin in good condition. When used in cosmetic formulations, it works to keep your skin feeling soft, smooth, and hydrated. Essentially, it acts as a moisturizer, helping to prevent dryness and flakiness by forming a barrier on the skin’s surface that reduces water loss. This makes it a valuable ingredient in products like lotions, creams, and serums that aim to improve the overall texture and appearance of your 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).
Polyglyceryl-10 Stearate is generally considered safe for use in cosmetic products. It is known for its skin conditioning properties and is widely used in various skincare formulations. 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 Polyglyceryl-10 Stearate 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 Polyglyceryl-10 Stearate are uncommon. However, it is always prudent to conduct a patch test before widespread usage to ensure that the ingredient does not cause any adverse reactions on your skin.
In terms of comedogenicity, Polyglyceryl-10 Stearate has a rating of 1 on a scale of 0 (totally non-comedogenic) to 5 (highly comedogenic). This low rating indicates that it is unlikely to clog pores and is generally suitable for people prone to acne, blemishes, or breakouts. However, individual reactions can vary, and it is important to monitor your skin’s response when using any new product.
