Cocamidopropyl betaine
Cocamidopropyl betaine (CAPB) is a mild, amphoteric surfactant derived from coconut oil, used as a foam booster, cleansing agent, and thickener in many personal care products like shampoos, body washes, and hand soaps, praised for its gentleness on sensitive skin and ability to reduce the irritation from other surfactants, though impurities can sometimes cause sensitization. It's biodegradable, versatile, creates lather, and enhances product texture, making it a popular choice for baby products and sensitive skin formulations.