Foam stabilizers are substances used to enhance the stability and longevity of foam in various applications. They work by reducing the surface tension of the liquid, allowing the foam bubbles to hold their shape longer. Commonly found in products like shaving creams, whipped toppings, and firefighting foams, these stabilizers help maintain the desired texture and performance. These stabilizers can be natural or synthetic, with examples including proteins, gums, and surfactants. By improving foam stability, they contribute to the effectiveness and usability of products, ensuring that the foam remains intact during use and provides the intended benefits.