Common Name(s): C30-50 alkyl stearate,c30-50 alkyl stearate,long-chain emollient,non-polar skin conditioner
CAS Number: N/a
DESCRIPTION
What It Does: Provides non-polar emollient conditioning with spreading value determined by chain length.
Why It's Used: Long-chain synthetic emollients provide precise performance engineering โ carbon chain length and branching determining spreading coefficient, viscosity, and wax character for targeted formulation outcomes.
How It Works: Long alkyl chain van der waals forces control viscosity and spreading โ chain length above c18 transitions from emollient oil to solid wax character.
Typically Found In: Skin care,colour cosmetics,anhydrous products
TECHNICAL DETAILS
Primary Category: Functional ingredient โ emollient
Secondary Functions: Barrier sealing,softening
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 1%โ30%
SOURCING & ETHICS
Vegan Status: Conditional - feedstock declaration required
Halal Status: Unverified - feedstock declaration required (plant, animal and petrochemical routes all exist)
Source Notes: Plant-derived, synthetic or animal-derived. verify source. [audit 2026-07-29 rev2: origin-dependent: the same inci exists in plant, animal and petrochemical versions and the name does not discriminate. determination requires shariah-panel sign-off.]
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 1/5 โ low; formulation-dependent
Sensitivity Concerns: Non-irritating.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile. ewg score: 1.
Works Well With: Humectants,ceramides,actives as carrier
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
Long-chain alkyl silicones provide hybrid silicone-wax performance unavailable from either component alone โ the combination enabling lip products and colour cosmetics with both silicone-like dry feel and wax-like structural integrity.
Last Verified: 2026-03-22
Primary Sources: Cosing database,c30-50 alkyl stearate long-chain emollient silicone wax review