Sodium Cocoyl Isethionate (SCI)

Sodium cocoyl isethionate (SCI) is the "baby-foam" surfactant: a coconut-fatty-acid ester of isethionic acid that creates dense, creamy lather with outstanding mildness — the gentle soul of high-end syndet and baby cleansing bars. It rinses clean without stripping and maintains foam even in hard water, where soap fails. At 20–50% in bars and 5–15% in liquid systems it delivers a luxurious sensory experience with a strong safety record. It is what replaced harsh soap chemistry in modern "beauty bars". For cleansing that feels indulgent and behaves kindly, SCI-based products are the benchmark.