Common Name(s): Borage seed oil polyglyceryl-4 esters,borage seed oil polyglyceryl-4 esters,botanical oil/butter,emollient efa source
CAS Number: N/a
DESCRIPTION
What It Does: Provides emollient conditioning from sc-compatible fatty acid triglycerides โ oleic, linoleic, and linolenic acids supporting barrier lipid supplementation and ceramide precursor delivery.
Why It's Used: Borage seed oil polyglyceryl-4 esters is selected for its natural-origin polyglyceryl-4 head group esterified to fatty acid ester โ the 4-unit glycerol backbone provides hlb value tuned by the 4-unit glycerol chain and ester composition, meeting clean-label criteria with ecocert-approvable biodegradable chemistry.
How It Works: Fatty acid triglycerides integrate into sc: oleic (c18:1) provides fluid emolliency; linoleic (c18:2, omega-6) serves as ceramide precursor; saturated fatty acids provide occlusive reinforcement.
Typically Found In: Skin care,barrier repair
TECHNICAL DETAILS
Primary Category: Active ingredient โ antioxidant
Secondary Functions: Free radical scavenging,anti-aging
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.5%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 extract or synthetic. [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: 0/5 โ 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 for target application.
Last Verified: 2026-03-22
Primary Sources: Cosing database,borage seed oil polyglyceryl-4 este botanical oil review