Sodium 3-hydroxy-2-methylpropionate is commonly used as a buffering agent in various cosmetic and personal care products. It helps maintain the pH balance of formulations, ensuring stability and effectiveness. In skincare products, it aids in enhancing the texture and absorption of active ingredients, providing a smoother application. Additionally, it is utilized in hair care products to condition and soften hair, improving manageability and shine. Its mild properties make it suitable for sensitive skin formulations, reducing the risk of irritation. In some cases, it is also employed in pharmaceutical preparations to stabilize and optimize the delivery of active compounds.