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AMINOPROPYL CERIUM POLYSILSESQUIOXANE CHLORIDE.

Valuable / HUMECTANT, SKIN CONDITIONING

Aminopropyl Cerium Polysilsesquioxane Chloride is an advanced amino-modified silicone resin designed to enhance cosmetic durability and feel. It forms a flexible, long-lasting film that improves product adhesion and comfort on keratinous surfaces.

skin conditioning humectant film forming

Science

This ingredient functions as an amino-modified silsesquioxane, forming a durable film on the skin. Its cationic nature enhances adherence to keratin, while cerium integration may offer oxidative stability and UV-shielding benefits.


Research

Medium confidence
Effective range 0.1–25%
Optimal

N/A

Key findings

  1. 01 L'Oreal Patent WO2024091736A2 demonstrated improved film adhesion, long-wear, and non-cracking properties in color cosmetics.

Transparency

Not commonly dusted

Data is not available to assess dusting properties for this ingredient.


The Formula

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Highly stable due to its polysilsesquioxane cage structure and chloride salt form. It is typically formulated in anhydrous systems or the oil phase of emulsions.

Conflicts

  • Strong anionic surfactants (may cause precipitation)
  • Strong oxidizing agents

Safety

CIR Status
Not reviewed
Sensitization risk Low

While not formally reviewed by the CIR, it is listed in the EU's CosIng database as a safe conditioning and humectant agent. It's often found in complex silicone resin blends.


Your Skin

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

Our Assessment

Valuable

This specialized film-former is valuable for enhancing the longevity, adhesion, and comfort of color cosmetics.


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