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Featured Ingredient

Close-up of Cocamidopropyl Betaine on a spoon, a surfactant ingredient used by The Good Soap Works Co.

Cocamidopropyl Betaine (CAPB)

The Versatile, Foam-Boosting Cleanser

Cocamidopropyl Betaine (CAPB) is a gentle, amphoteric surfactant derived from coconut oil. It’s widely loved for its ability to boost foam, enhance cleansing, and improve the mildness of other surfactants, making it a go-to ingredient in shampoo bars, body washes, and facial cleansers. CAPB is known for adding richness to lather while helping to condition the hair and scalp, leaving hair feeling soft and manageable.

In shampoo bars, CAPB works as both a cleanser and a co-surfactant, helping to reduce irritation from stronger surfactants like SLSa while maintaining an effective cleanse. It also has antistatic and conditioning properties, which make it great for taming frizz and improving hair texture. It’s suitable for all hair types, including dry, curly, and color-treated hair, as it cleanses without excessive stripping.

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