What is Steric Acid?
Stearic acid is a naturally occurring fatty acid commonly found in animal and plant fats, although it is particularly abundant in animal fats. Chemically, it is a long-chain saturated fatty acid consisting of eighteen carbon atoms and is known for its waxy, solid texture. Typically, stearic acid is odorless and has a white appearance, making it ideal for use in various skincare and cosmetic formulations. It is produced by processing fats from sources such as cocoa butter, shea butter, and animal fat through a method known as hydrolysis. Due to its versatile and stable nature, stearic acid is a valuable component in numerous everyday products (PubChem, 2021).
The Various Uses of Stearic Acid
Stearic acid has a range of functions in both industrial and consumer products. It is frequently used as an emulsifying agent, surfactant, and thickener, particularly in skincare and cosmetics where it helps stabilize and bind ingredients, providing a smooth and creamy consistency to lotions, creams, and soaps. In candles, stearic acid is added to harden wax, which allows for a longer burn time. Its utility extends beyond personal care; stearic acid is also a common ingredient in the production of lubricants, plastics, and rubber, making it a multi-functional ingredient with applications in various fields (Cosmetic Ingredient Review, 2020).
Products That Contain Stearic Acid
Stearic acid can be found in a wide range of personal care and household products. In skincare, it is commonly included in moisturizers, facial cleansers, sunscreens, and body lotions. In soap-making, stearic acid helps create a firm, long-lasting bar that produces a rich, creamy lather. It is also frequently used in makeup products, such as foundations and eyeliners, to provide a smooth texture that’s easily blended. This versatility makes stearic acid a staple in skincare and household items, enhancing the texture and performance of products across multiple categories (American Cleaning Institute, 2021). At Nellie’s Wicks And Bricks we use Stearic Acid in our Sugar scrubs.
Is Stearic Acid Natural or Synthetic?
Stearic acid can be derived from both natural and synthetic sources. Naturally, it is sourced from animal fats or plant oils, including coconut and palm oils. For vegan or plant-based formulations, stearic acid is typically derived from plants, as animal-based sources may not align with certain dietary or ethical preferences. Additionally, synthetic stearic acid is manufactured in labs to mimic the natural structure. While both natural and synthetic stearic acid function similarly in products, natural sources are often preferred in skincare for their purity and skin compatibility (FDA, 2020).
Safety of Stearic Acid for Kids and Adults
Stearic acid is widely considered safe for use on both adults and children in skincare and personal care products. It is generally non-toxic, non-irritating, and well-tolerated by most skin types, including sensitive skin. Its mild properties mean it poses minimal risk for irritation or allergic reactions. However, those with extremely sensitive skin or specific allergies may benefit from conducting a patch test to ensure no adverse effects. Overall, stearic acid is recognized as a safe and effective ingredient in skin and personal care products for individuals of all ages (Cosmetic Ingredient Review, 2020).
References:
American Cleaning Institute. (2021). Stearic acid in personal care and household products.
Cosmetic Ingredient Review. (2020). Safety Assessment of Stearic Acid.
FDA. (2020). Overview of cosmetic ingredient safety.
PubChem. (2021). Stearic Acid.