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BUTYL POLYDIMETHYLSILOXY ETHOXYPROPYL PHOSPHATE.

Valuable / SURFACTANT - CLEANSING

A specialized anionic silicone phosphate that excels at dispersing mineral UV filters and creating water-resistant films on skin. This advanced surfactant ensures uniform distribution of zinc oxide and titanium dioxide while delivering exceptional sweat and water resistance in cosmetic formulations.

Pigment dispersant Water resistance enhancer Film former Texture enhancer Surface treatment agent

Science

Creates a hydrophobic protective barrier on skin's surface while acting as a molecular bridge between inorganic pigments and the formula matrix. The anionic charge enables superior dispersion of mineral UV filters, while the silicone backbone forms cohesive films that resist water penetration and prevent product migration.


Research

Medium confidence
Effective range 0.1–0.65%
Optimal

0.6486%

Key findings

  1. 01 Highest historical usage concentration of 0.6486% established as effective threshold for pigment dispersion and water resistance enhancement

Transparency

Not commonly dusted

Specialized technical ingredient with established maximum usage levels, not typically subject to cosmetic dusting practices


The Formula

Solubility
Oil
Optimal pH 4 – 9
0 7 14

Stability

Exceptional thermal stability up to 85°C with resistance to oxidation. Performs optimally in water-in-oil and water-in-silicone emulsion systems.

Synergies

  • Zinc Oxide
  • Titanium Dioxide
  • Silicone-based emulsifiers

Conflicts

  • Highly cationic ingredients
  • Formulations below pH 3.0

Safety

CIR Status
Not specifically reviewed
Max tested
0.6486%
Pregnancy
Safe
Sensitization risk Low

Approved for global use via EU Cosing database and Chinese IECIC 2021 listings. Utilized by major Japanese cosmetic manufacturers in consumer products.


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Valuable

Highly specialized ingredient that delivers superior water resistance and mineral UV filter dispersion at proven concentrations.


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