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Moumoujus

NONYL NONOXYNOL-9 PHOSPHATE.

Questionable CAS 39464-64-7 / CLEANSING, SURFACTANT - CLEANSING

Nonyl Nonoxynol-9 Phosphate functions as a surfactant and skin cleansing agent. It effectively reduces surface tension, facilitating the mixing of oil and water, and provides emulsifying and dispersing properties crucial for thorough cleansing.

Summary

Surfactant Cleansing Agent Emulsifier Dispersing Agent Wetting Agent

Science

Mechanism of Action

This ingredient operates by lowering the surface tension between oil and water phases, allowing them to combine and be removed. It contributes to skin cleansing through its detergent and wetting capabilities, acting as an emulsifier and dispersant to enhance product performance.

Research

Clinical Evidence

Insufficient-data confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Both
Optimal pH N/A
0 7 14

Stability

Exhibits stability in acidic environments.

Conflicts

  • The parent compound, Nonoxynol-9, is recognized for its ability to degrade latex, which is a critical consideration for formulations intended for use with latex products such as condoms.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Unknown

The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that Nonoxynols, including Nonyl Nonoxynol-9 Phosphate, are safe for use in cosmetics when formulated to be non-irritating. Earlier concentration limits for lower molecular weight Nonoxynols in leave-on products were removed for Nonoxynol-9 and its higher ethoxylates, emphasizing careful formulation. However, EWG VERIFIED products list this ingredient as 'Restricted,' permitting its use only under specific conditions and warnings, primarily due to concerns about potential contamination from toxic impurities. While the FDA approved the parent compound, Nonoxynol-9, as an OTC vaginal contraceptive, it issued warnings regarding increased infection risk due to vaginal/rectal irritation and lack of protection against HIV/STDs. The European Union has established a 0.1% concentration limit for nonylphenol ethoxylates and nonylphenol based on environmental persistence and potential endocrine disruption in ecological species; however, CIR considered these environmental concerns distinct from consumer safety in cosmetics.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Questionable

While a functional surfactant and cleansing agent, its association with environmentally persistent compounds, EWG's 'Restricted' status due to potential impurities, and the lack of specific skin efficacy data beyond basic cleansing render its suitability for precision skincare formulations questionable.

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