INCI name

AMINOPROPYL MAGNESIUM POLYSILSESQUIOXANE CHLORIDE

This entry shows data from the EU CosIng database. An editorial description has not been written and reviewed yet.

Functions

Antimicrobial: Preventing and/or slowing down microbial growth.
Humectant: Retaining and/or preserving the moisture in a product during use.
Skin conditioning: Maintaining the skin in good condition.

This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.

CosIng: Aminopropyl Magnesium Polysilsesquioxane Chloride is a resinous material composed of a mixture of three-dimensional siloxane polymers and oligomers with cage structures. For the oligomers, each silicon atom in the polysilsesquioxane is connected via oxygen atoms to three other silicon atoms and can be represented by the empirical formulation RSiO3/2, where R represents the aminopropyl group. For the larger polymeric polysilsesquioxanes, some of the silicon atoms are not connected to other silicon atoms and instead have a silanol (SiOH) group. Aminopropyl Magnesium Polysilsesquioxane Chloride is prepared by the hydrolysis and condensation of 3-aminopropyltriethoxysilane, and reaction with magnesium chloride
Ingredient categories: Humectants
Sources: CosIng – European Commission database of cosmetic ingredients (3 November 2026)