
SODIUM HYDROXIDE
Description
Sodium hydroxide, also known as lye or caustic soda, is a potent alkaline compound widely used in skincare and cosmetic formulations. This versatile ingredient plays a crucial role in adjusting the pH of products and acts as a powerful cleansing agent. In soap manufacturing, sodium hydroxide initiates the saponification process, converting fats and oils into soap.
In skincare, sodium hydroxide is utilized in small, controlled amounts to balance the acidity of other ingredients, ensuring product stability and effectiveness. It's particularly useful in formulations containing acidic components like alpha-hydroxy acids (AHAs) or beta-hydroxy acids (BHAs). Sodium hydroxide can also function as a buffering agent, helping to maintain a consistent pH level in products over time.
While highly effective, sodium hydroxide requires careful handling during formulation due to its caustic nature. In finished products, it's present in neutralized form and at very low concentrations. When properly formulated, it poses no risk to skin health. However, it's crucial for formulators to precisely calculate and balance its use to avoid potential irritation or damage to the skin's protective barrier.