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Ingredient directory

Oleth-9

OLETH-9 is an ethoxylated oleyl alcohol, a synthetic polymer noted for its versatile role as a non-ionic emulsifier, surfactant, and solubilizer in precision skincare formulations. Its unique molecular architecture enables the stable integration of diverse ingredients within a product, ensuring consistent texture and performance.

Directory entry · Individual source review pending

This profile is awaiting an individual source review. Treat its ratings, dose estimates and compatibility labels as provisional; they are not medical advice or proof of a finished product’s effects.

Emulsifying Surfactant Cleansing Solubilizer Fragrance Functional

Science

OLETH-9 functions fundamentally by reducing interfacial tension at molecular boundaries. As an emulsifier, its amphiphilic structure, comprising both lipophilic and hydrophilic segments, stabilizes immiscible phases such as oil and water, ensuring homogeneous product consistency. In its surfactant capacity, it aids in skin and hair cleansing by allowing water to efficiently interact with and lift lipophilic impurities like sebum and environmental debris for effective rinsing. Furthermore, OLETH-9 acts as a solubilizer, dispersing poorly soluble active ingredients within aqueous solutions, and also serves as a fragrance functional ingredient.


Research

Low confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

The Formula

Solubility
Water
Optimal pH N/A
0 7 14

Stability

The optimal pH range for OLETH-9's stability is not precisely defined in available research. Its water solubility is noted to increase proportionally with a higher content of ethylene oxide.


Safety

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel affirms OLETH-9's safety for current cosmetic applications. However, formulations containing Oleth ingredients have been associated with mild to moderate eye and skin irritation. Consistent with polyethylene glycol (PEG) safety protocols, OLETH-9 is not advised for use on compromised or damaged skin barriers.


Your Skin

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

Our Assessment

Valuable

OLETH-9 is a valuable multifunctional ingredient, widely utilized for its essential emulsifying, cleansing, and solubilizing properties across diverse cosmetic formulations, generally demonstrating a favorable safety and skin compatibility profile.


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