Used primarily as a detergent cleansing agent, but is potentially drying and irritating for skin. Can be derived from coconut. It’s tricky to include in formulas due to stability issues, but it does produce copious foam. Secondary surfactants can be used with this cleansing agent to minimize its negative impact on skin, but why not just use a cleanser that contains gentler cleansing agents? All skin types do better with gentle cleansing agents, and there are plenty of options in that regard, so no need to settle for one that contains this potentially problematic cleansing agent.