Sodium Cocoyl Amino Acids

Sodium Cocoyl Amino Acids is a mild amino-acid–derived anionic surfactant used primarily in cleansers, typically at a few percent in finished formulas, and is generally less irritating than harsher sulfates. However, as a cleansing surfactant it can still disrupt barrier lipids and provoke stinging or dryness in eczema-prone or compromised skin with repeated use or longer contact time. Given real-world cumulative exposure in routines and sensitive-skin populations, it fits a gentle-but-not-inert irritancy profile. Safety Notes: In commercial products, Sodium Cocoyl Amino Acids is most often used as a mild primary or secondary surfactant in rinse-off cleansers, with low levels (~0.1–1%) appearing in micellar waters, facial cleansers, and baby washes as a mildness/foam modifier in mixed-surfactant systems. Mainstream sulfate-free facial and body cleansers commonly use ~2–10% of the ingredient (or equivalent active matter when supplied as a solution), while high-foaming “amino acid cleanser” pastes/creams and concentrated syndet-style wash products sold OTC can reach ~15–25% as a key surfactant component; use at these higher levels is primarily rinse-off rather than leave-on due to surfactant irritation potential.