Common Name(s): Potassium cocoyl taurate,n-cocoyl taurate,amino acid mild surfactant

CAS Number: N/a

DESCRIPTION

What It Does: Potassium cocoyl taurate cleanses skin and hair by removing oils, debris, and microorganisms through micelle formation while generating a rich, stable foam that delivers a premium sensory cleansing experience with significantly lower skin irritation than conventional sulfate surfactants.

Why It's Used: Formulators choose potassium cocoyl taurate over conventional sodium lauryl sulfate because it delivers equivalent cleansing power and foam quality at a dramatically reduced irritation profile — clinical studies consistently show taurate surfactants cause 3–5× less protein denaturation than sls at equal concentration. the sulfonate head group remains fully ionised across the entire cosmetic ph range (3–9), providing consistent performance in both acidic and alkaline formulations, which gives formulators much more latitude in ph design than carboxylate-based gentle surfactants.

How It Works: Potassium cocoyl taurate works because taurine's aminoethyl backbone positions the sulfonate head group away from the lipophilic fatty acid tail via an amide spacer — the n-acyl amino acid geometry reduces the density of negative charge at the protein-binding interface compared to conventional sulfates where the charge sits directly on the chain terminal. at skin ph 5.5, the sulfonate (pka ≈ –1) remains 100% ionised while providing the amino acid's structural compatibility with skin proteins. the result is a surfactant that forms effective micelles (critical micelle concentration ~2 mm for n-lauroyl taurate) with a surface charge geometry that is significantly less disruptive to skin protein secondary structure than sls.

Typically Found In: Luxury facial cleansers,baby shampoos,sensitive skin body wash

TECHNICAL DETAILS

Primary Category: Active ingredient – cosmetic active

Secondary Functions: Skin conditioning

Application Areas:

Typical Concentration Range: 5%–25%

SOURCING & ETHICS

Vegan Status: Conditional

Halal Status: Yes

Source Notes: Commercially produced for cosmetic use. verify vegan/halal status with supplier.

SKIN COMPATIBILITY

Irritancy Rating: 1/5 – very low

Comedogenicity Rating: 0/5 – non-comedogenic

Sensitivity Concerns: Well-tolerated by most skin types.

Safe for Sensitive Skin: Yes

SAFETY & COMPATIBILITY

Safety Profile: Good safety profile at recommended concentrations. ewg score: 1–2.

Works Well With: Standard skincare actives

Avoid Combining With: No known significant incompatibilities

SCIENTIFIC NOTE

Taurate permanent ionisation vs carboxylate ph sensitivity: carboxylate-based gentle surfactants (ether carboxylates, amino acid carboxylates) are partially protonated at skin ph 5–6 (pka ~4–5), reducing their surfactant character. taurate sulfonates (pka ≈ –1) are 100% ionised at all cosmetic ph — providing consistent foam and cleansing performance from ph 3 to 9. this ph-independent ionisation combined with amino acid backbone mildness makes taurates the preferred choice when formulators need both reliable performance and gentle skin interaction across a wide ph design space.

Last Verified: Cosing database,n-acyl taurate amino acid surfactant clinical review

Primary Sources: 2026-03-12