Common Name(s): Hazelnut seed oil decyl esters,hazelnut seed oil decyl esters,botanical oil/butter,emollient efa source

CAS Number: N/a

DESCRIPTION

What It Does: Provides emollient conditioning from sc-compatible fatty acid triglycerides supporting barrier lipid supplementation and ceramide precursor delivery.

Why It's Used: Hazelnut seed oil decyl esters is selected for its ester molecular architecture — the specific acid and alcohol fragments of hazelnut seed oil decyl esters determine the logp, spreading coefficient, and skin adhesion profile unavailable from any other functional ingredient class.

How It Works: Fatty acid triglycerides integrate into sc: oleic (c18:1) provides fluid emolliency; linoleic (c18:2) serves as ceramide precursor; gamma-linolenic (c18:3 n-6) provides anti-inflammatory benefit.

Typically Found In: Skin care,barrier repair

TECHNICAL DETAILS

Primary Category: Active ingredient – antioxidant

Secondary Functions: Free radical scavenging,anti-aging

Application Areas:

Typical Concentration Range: 0.5%–30%

SOURCING & ETHICS

Vegan Status: Conditional - supplier confirmation required

Halal Status: Conditional - basis not stated in source record; supplier origin confirmation required to determine what evidence applies

Source Notes: Plant-derived extract or synthetic. [audit 2026-07-29 rev2: status downgraded on audit. determination requires shariah-panel sign-off.]

SKIN COMPATIBILITY

Irritancy Rating: 1/5 – very low

Comedogenicity Rating: 0/5 – non-comedogenic

Sensitivity Concerns: Non-irritating; well-tolerated.

Safe for Sensitive Skin: Yes

SAFETY & COMPATIBILITY

Safety Profile: Excellent safety profile. ewg score: 1.

Works Well With: Vitamin c,vitamin e,ferulic acid,spf,other antioxidants

Avoid Combining With: No significant incompatibilities

SCIENTIFIC NOTE

Verify specific oil's efa composition and oxidative stability index for target application.

Last Verified: 2026-03-22

Primary Sources: Cosing database,hazelnut seed oil decyl esters botanical oil review