Can be derived from coconut. Used primarily as a detergent cleansing agent, but is potentially drying and irritating for skin and is also tricky to formulate with due to stability issues, though 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 options in that regard, so no need to settle for one that contains a potentially problematic cleansing agent.