Sodium Lauroyl Sarcosinate
AKA “137-16-6, N-Lauroylsarcosine sodium salt, Sodium lauroylsarcosinate, Sodium N-lauroylsarcosinate, Sarkosyl NL, Gardol, Medialan LL-99, Sarcosyl NL, Sodium lauroylsarcosine
Surfactant
Ingredient Facts
Sodium lauroyl sarcosinate
AKA: 137-16-6, N-Lauroylsarcosine sodium salt, Sodium lauroylsarcosinate, Sodium N-lauroylsarcosinate, Sarkosyl NL, Gardol, Medialan LL-99, Sarcosyl NL, Sodium lauroylsarcosine
Surfactant · Cleansing · EWG: 4
Synthetic
Cleanser
Emulsifier
Skin Conditioner
Hair Care
Amino Acid
Plant Oil
Not Clean
Sodium lauroyl sarcosinate is an sodium salt of an acyl derivative of sarcosine, which is a natural amino acid found in muscles and other body tissues. Acyl sarcosines are considered modifiŽed fatty acids in which the hydrocarbon chains are interrupted by an amidomethyl group in the alpha position. They are used as hair-conditioning agents and surfactant-cleansing agents in cosmetics, as well as to improve wetting and penetration of topical pharmaceutical products. Acyl sarcosines and their sodium salts are also used in the metal finishing and processing industries for their crystal modifying, anti-rust, and anti-corrosion properties. (L1892, A2881)
Formula
C15H28NNaO3
Mol. Weight
293.38
CAS #
137-16-6
State
Dry Powder, Liquid; Liquid
See origin →
Functions
Antistatic
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Foaming
Hair Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Viscosity Controlling
Locks in moisture
Traditional Use
Synthesized in the mid-20th century as a mild, amino acid-derived surfactant created to replace harsh sulfates in personal care products while maintaining the amino acid benefits historically valued in skincare formulations.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Final Report on the Safety Assessment of Cocoyl Sarcosine, Lauroyl Sarcosine, Myristoyl Sarcosine, Oleoyl Sarcosine, Stearoyl Sarcosine, Sodium Cocoyl Sarcosinate, Sodium Lauroyl Sarcosinate, Sodium M
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Sodium Lauroyl Sarcosinate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Sodium Lauroyl Sarcosinate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Method for Simultaneous Determination of Amino Acid Surfactants Sodium N-Lauroylsarcosinate and Sodium Methyl Cocoyl Taurate in Personal Care Products
Thangarathinam K, Narayanan U
Journal of chromatographic science, 2025
Method for Simultaneous Determination of Amino Acid Surfactants Sodium N-Lauroylsarcosinate and Sodium Methyl Cocoyl Taurate in Personal Care Products
Thangarathinam K, Narayanan U
Journal of chromatographic science, 2025
The impacts of sodium lauroyl sarcosinate in facial cleanser on facial skin microbiome and lipidome.
Zhao H, Yu F, Wang C, Han Z, Liu S et al.
Journal of cosmetic dermatology, 2024
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR