Hydroxystearic Acid is a fatty acid with properties similar to stearic acid, making it quite desirable in the cosmetic industry. It is primarily an emollient that nourishes and softens the skin and hair. It also acts as a thickener in products like moisturizers, gels, and shampoos to achieve a luxurious consistency. When added to cleansing products, Hydroxystearic Acid works as a surfactant to leave the surface clean and dirt-free. This acid is safe for the skin as well as the environment and appears in the form of solid flakes. It is also known as octadecanoic acid or 12-HSA. The chemical formula of Hydroxystearic Acid is C18H36O3.
What is HYDROXYSTEARIC ACID used for?
Hydroxystearic Acid has a wide range of benefits in the skin care industry. It is an excellent emollient that deeply moisturizes the skin to leave it supple and soft. This ingredient also enhances the texture of the formulations that it is used in - making them thicker that feels good to touch and is easy to apply. In products like soaps and cleansing solutions, Hydroxystearic Acid acts as a surfactant that mixes well with dirt and oil present on the surface of the skin and effectively washes it away. Some researchers also claim that HSA is beneficial in fading discolorations and reducing the size of pores. Overall, Hydroxystearic Acid is quite useful in improving skin health by leaving it clean, nourished, supple, and soft.
Origin
Hydroxystearic Acid is most commonly made from natural sources like castor oil. However, it can also be made synthetically in the labs from stearic acid. Through a chemical process called hydroxylation, stearic acid undergoes a reaction where a hydroxyl group (-OH) is introduced into its molecular structure, yielding Hydroxystearic Acid. This process typically involves the use of catalysts and controlled conditions to ensure the desired conversion.
Safety profile
Hydroxystearic Acid is a non-irritating and non-toxic ingredient that is safe for the skin. It is also good for oily skin as it is non-comedogenic and does not clog pores. It is generally considered safe for use up to the concentrations of 10%. However, in leave on products, the usage levels should be between 1-5%. Further, Hydroxystearic Acid has a shelf life of two years and is considered a green cosmetic, meaning it is chemical-free and safe for the environment. It is important to note that HSA can lead to respiratory issues if inhaled in large quantities. Other side effects include minor eye irritation if exposed to the eyes, or nausea and vomiting if ingested. Lastly, Hydroxystearic Acid is a vegan compound and is a great option for people following the vegan lifestyle.