Article last updated: October 15, 2024
Ascorbyl Stearate, also known as (Stearoyloxy)-L-ascorbic acid, is a derivative of Vitamin C (ascorbic acid) combined with stearic acid, a fatty acid. This unique combination allows it to serve as an antioxidant in cosmetic formulations. The ingredient is sometimes referred to by other names such as L-Ascorbic Acid 6-Stearate or Vitamin C Stearate.
The history of Ascorbyl Stearate in cosmetics dates back to the increasing demand for stable and effective Vitamin C derivatives. Traditional Vitamin C is known for its potent antioxidant properties but is also notoriously unstable, easily degrading when exposed to light, air, and heat. To overcome this, scientists developed Ascorbyl Stearate, which offers a more stable form of Vitamin C that can be effectively incorporated into various cosmetic products.
The production of Ascorbyl Stearate involves a chemical reaction between ascorbic acid and stearic acid. This process typically occurs under controlled conditions to ensure the stability and efficacy of the final product. The result is a compound that retains the antioxidant properties of Vitamin C while benefiting from the emollient characteristics of stearic acid, making it a versatile ingredient in skincare formulations.
In this section, we will delve into the officially recognized cosmetic benefits and uses of Ascorbyl Stearate:
Ascorbyl Stearate is primarily known for its antioxidant properties. In simple terms, antioxidants are like the bodyguards of your skin cells. They help to neutralize harmful molecules known as free radicals, which can cause damage to your skin over time. By incorporating Ascorbyl Stearate into your skincare routine, you can help protect your skin from environmental stressors like pollution and UV radiation, which are known to accelerate the aging process.
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).
Ascorbyl Stearate is generally considered safe for topical application 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 Ascorbyl Stearate during pregnancy 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 Ascorbyl Stearate are relatively uncommon, but it is always prudent to conduct a patch test before widespread usage to ensure there is no sensitivity or allergic reaction.
Ascorbyl Stearate has a comedogenic rating of 2, which means it has a low likelihood of clogging pores. However, individuals who are prone to acne, blemishes, or breakouts should still exercise caution when using products containing this ingredient.
