Common Name(s): Peach kernel oil glycereth-8 ester,self-emulsifying peach kernel oil oil,water-dispersible carrier

CAS Number: N/a

DESCRIPTION

What It Does: Peach kernel oil glycereth-8 esters conditions and softens skin by delivering the emollient fatty acids and triglycerides of peach kernel oil to the stratum corneum, while simultaneously acting as its own emulsifier to disperse evenly in water-based formulations and rinse-off applications such as bath oils where it spreads as a homogeneous emollient film over the body surface rather than leaving greasy oil slicks.

Why It's Used: Formulators choose peach kernel oil glycereth-8 esters because it eliminates the need for a separate co-emulsifier in many applications — the glycereth ester modification provides built-in hlb balance to the parent oil, making it self-dispersing. in bath oils, this is particularly important: a standard plant oil added to bath water creates a floating oil layer that coats the tub rather than skin. the self-emulsifying glycereth modification causes the oil to form a fine milky dispersion in bath water that deposits evenly on skin during immersion, delivering the full emollient benefit without the mess of undispersed oil.

How It Works: Peach kernel oil glycereth-8 esters functions through the amphiphilic character introduced by the glycereth esterification: the fatty acid chains of peach kernel oil provide the lipophilic component while the polyethylene glycol-glyceryl ester head group provides hydrophilicity. this amphiphilic structure spontaneously self-assembles into oil-in-water microemulsions when water is added, with the hlb of the glycereth ester head group balancing the lipophilicity of the oil component. the 8-mole ethylene oxide chain in the glycereth provides an hlb contribution that exactly complements the typical hlb of triglyceride-based oils (hlb ~6), producing a balanced amphiphile that forms stable clear or milky o/w dispersions without external emulsifiers.

Typically Found In: Bath oils,clear emulsions,simplified emulsion systems

TECHNICAL DETAILS

Primary Category: Functional ingredient – emollient

Secondary Functions: Barrier sealing,softening

Application Areas:

Typical Concentration Range: 5%–30%

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 – very low

Comedogenicity Rating: 1/5 – 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

Self-emulsification mechanism: standard plant oils have hlb ~6 (w/o tendency, water-insoluble). glycereth-8 esterification adds a hydrophilic peg head (hlb contribution ~12) to the triglyceride structure, creating a molecule with balanced hlb ~9–11 in the o/w emulsification zone. the bancroft rule predicts the emulsifier geometry (curved peg head relative to compact ester linkage) naturally forms o/w rather than w/o structures — providing spontaneous o/w self-emulsification from geometric amphiphilic balance in one molecule.

Last Verified: 2026-03-12

Primary Sources: Cosing database,peach kernel oil glycereth ester self-emulsifying review