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Moumoujus

PEG-4 PROLINE LINOLENATE.

Valuable / SKIN CONDITIONING - EMOLLIENT

PEG-4 PROLINE LINOLENATE is a multi-functional ingredient that combines the hydrating and barrier-enhancing properties of a PEG derivative with the skin-conditioning and restorative benefits of linolenic acid. It primarily functions as an emollient, humectant, and skin conditioner, contributing to improved skin hydration and barrier integrity.

Summary

Emollient Humectant Solvent Skin-conditioning agent Penetration enhancer

Science

Mechanism of Action

This ingredient operates via a dual mechanism stemming from its two primary components. The Polyethylene Glycol (PEG-4) segment acts as a humectant, attracting and binding water molecules to the skin, thus providing sustained hydration. PEGs also form a protective barrier that reduces transepidermal water loss and can enhance the absorption of other active ingredients. The linolenate portion, derived from the essential omega-6 fatty acid linoleic acid, is critical for maintaining a robust skin permeability barrier. Linoleic acid deficiency compromises skin barrier function and is implicated in acne development. Furthermore, it can contribute to reducing acne severity and hyperpigmentation by interfering with melanin synthesis and promoting the shedding of pigmented cells.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Both
Optimal pH 8.5 – 8.5
0 7 14

Stability

Optimal stability for PEGylated linolenic acid vesicles and other PEG-stabilized nanolipoparticles has been observed at a slightly alkaline pH of 8.5, with significant instability noted at pH 5.0.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has deemed general PEG ingredients, including PEG-4, safe for cosmetic use, removing prior restrictions concerning use on damaged skin. PEG-4 itself demonstrates low toxicity with minimal risk of irritation or sensitization within appropriate concentrations. Specific topical maximum concentrations for PEG-4 PROLINE LINOLENATE are not established; a listed systemic toxicity restriction of 10.0 mg/kg refers to internal exposure, not cosmetic application. PrecisionFDA notes an 'incomplete polymer record' for this ingredient.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

PEG-4 PROLINE LINOLENATE offers valuable benefits as an emollient, humectant, and skin barrier supporting agent, suitable for a wide range of skin types, despite the lack of specific clinical efficacy data for the exact compound.

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