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Moumoujus

PPG-15.

Valuable CAS 25322-69-4 / SKIN CONDITIONING

PPG-15 functions as a multi-faceted ingredient, enhancing the texture and feel of formulations while also serving as a potent delivery system for active compounds. It notably improves skin softness, smoothness, and overall moisturization.

Summary

emollient solvent emulsifier skin conditioning penetration enhancer

Science

Mechanism of Action

PPG-15 Stearyl Ether acts primarily as an emollient and skin-conditioning agent, forming a non-occlusive lubricating layer on the skin's surface to impart softness and smoothness. Beyond its textural contributions, it is an excellent solvent and carrier, facilitating the uniform dispersion of other ingredients. Critically, it functions as a penetration enhancer, optimizing the delivery of active ingredients into the skin. When combined with specific emulsifiers, PPG-15 can form advanced liquid crystal structures (oleosomes), which are instrumental in improving the solubilization of poorly water-soluble actives, enabling controlled release kinetics, and protecting delicate molecular structures. This ingredient also contributes to improved skin elasticity and a refined, velvety skin feel.

Research

Clinical Evidence

Medium confidence
Effective range 2–10%
Optimal

2.5%

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH 2 – 10
0 7 14

Stability

PPG-15 Stearyl Ether exhibits robust stability across a broad pH range of 2 to 10, remaining active in both highly acidic and basic environments. It demonstrates excellent compatibility, not reacting with most cosmetic raw materials and readily compounding with both anionic and cationic surfactants. Formulations may include 0.05% to 0.1% BHT as an antioxidant to maintain stability.

Synergies

  • Certain emulsifiers (to form liquid crystal structures for enhanced active dissolution and controlled release)
  • Anionic and cationic surfactants

Safety

Safety Profile

CIR Status
Safe as used
Max tested
25%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has affirmed PPG-15 Stearyl Ether as safe for use in cosmetics, with current concentrations typically ranging from 2% to 10%, though safe up to 25%. While undiluted forms showed negligible eye irritation and slight skin irritation in animal models, minor skin irritation in humans is a possibility. Consequently, a preliminary patch test is recommended prior to extensive usage. It is generally recognized as non-toxic and non-carcinogenic.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PPG-15 is a valuable ingredient, offering precise control over active ingredient delivery alongside notable emollient and conditioning benefits, making it a sophisticated choice for diverse formulations.

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