Sodium Stearoyl Lactylate
AKA “25383-99-7, Sodium stearoyl-2-lactylate, Sodium 2-stearoyllactate, sodium stelate, UNII-IN99IT31LN, Sodium stearyl-2-lactylate, EINECS 246-929-7, IN99IT31LN, EMULSILAC SK”
Synthetic
Ingredient Facts
Sodium stearoyl lactylate
AKA: 25383-99-7, Sodium stearoyl-2-lactylate, Sodium 2-stearoyllactate, Sodium stelate, UNII-IN99IT31LN, Sodium stearyl-2-lactylate, EINECS 246-929-7, IN99IT31LN, EMULSILAC SK
Synthetic · Skin Conditioning · EWG: 1
Synthetic
Skin Conditioner
Chemical Exfoliant
Synthetic
Clean
The Panel concluded that the following alkanoyl lactyl lactate salts are safe in cosmetics in the present practices of use and concentration described in the safety assessment, when formulated to be non-irritating and non-sensitizing, which may be based on a QRA or other accepted methodologies...Sodium Stearoyl Lactylate...
Solubility Insoluble in water. Soluble in ethanol
Formula
C24H43NaO6
Mol. Weight
450.60
CAS #
25383-99-7, 18200-72-1
State
Dry Powder
See origin →
Functions
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Emulsifier
Mixes Oil & Water
Traditional Use
This is the CAS number for Zinc Pyrithione, an antimicrobial compound developed in the 1930s. Originally created for antifouling ship paints, it was later adopted in the 1950s for dandruff and scalp care products.
Skin Types
●all-skin-types
Best For
General
Barrier Repair Cream
Alpyn Beauty
Mini Barrier Repair Cream
Alpyn Beauty
Double Polishing Peel
Alpyn Beauty
The Radiance Ritual
Alpyn Beauty
Smooth & Soothe Duo
Odacité
Clean-ical Formulations AM + PM Serum Duo
Odacité
Hydra-Firm Full Body Duo • C-Glow & C-Smooth • Vitamin C+ Kakadu Plum
Odacité
Intense Repair Eye Cream Refill • Edelweiss Extrême® • Peptides + Carnosine
Odacité
Derm-Restore Super Serum • Edelweiss Extrême® • Peptides + Carnosine
Odacité
Edelweiss Extrême® • Repair + Restore Set
Odacité
Sun Defense Performance Duo • SPF 50 + Super Serum
Odacité
Anti-aging Dream Duo • SPF 50 + Retinol
Odacité
Edelweiss Extrême® Skin Barrier Set
Odacité
Age-Defying Fundamentals
Odacité
Day & Night Eye Care Duo
Odacité
Sun Damage Defense Duo • SPF 50 + Vitamin C
Odacité
Anti Aging Eye & Sun Defense Duo
Odacité
SPF 50 Color Balm Duo
Odacité
SPF 50 Tinted Sunscreen & Color Balm Duo
Odacité
Doctor's Scrub
Goldfaden MD
Vital Boost
Goldfaden MD
Discovery Starter Pack
Goldfaden MD
Ready, Set, Smooth
Goldfaden MD
Hyaluronic Acid 0.3% Hydrating Booster
Pai Skincare
Bonne Nuit™ Night Cream
Pai Skincare
Tri-Mushroom 10% Super-Soothing Booster
Pai Skincare
Making Moves Milky Cleanser
Ursa Major
Green Slate Mineral Polish
Ursa Major
Pure Radiance Supreme Eye Cream
True Botanicals
Phyto-Retinol Advanced Clinical Cream
True Botanicals
Bright Start Retinol Alternative Eye Cream
ILIA Beauty
Dream Bio-Retinol Body Serum
Credo Beauty
Sun Tone Bronzing Drops - Soleil Parfait 2
Westman Atelier
Sun Tone Bronzing Drops - Soleil Parfait 3
Westman Atelier
Sun Tone Bronzing Drops - Soleil Parfait 4
Westman Atelier
Sun Tone Bronzing Drops - Soleil Parfait 1
Westman Atelier
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR