Bis-aminopropyl dimethicone is a white, almost odorless fluid polymer. Bis-aminopropyl dimethicone is a modified silicone that works as an excellent conditioning agent and creates a protective barrier on the hair strands. It is considered one of the best high-performing conditioning polymers. This water-insoluble silicone is often found in regular conditioners.
Origin
In the manufacturing process of dimethicone, Si metal is converted to methyl chlorosilanes through its reaction with methyl chloride (CH3Cl). Dimethyldichlorosilane (DMDCS), the critical intermediate required for the synthesis of dimethicone, is the primary product of the direct process. Further, dimethicone hydrolysis produces a mixture of cyclic and linear silanol-terminated hydrolysates. Dimethicone is readily synthesized from the various hydrolysate components by a diverse selection of techniques employing a broad range of possible reaction conditions and catalysts, however, manufacturing methods of Bis-aminopropyl dimethicone are not found in literature.
Safety profile
The Cosmetic Ingredient Review (CIR) Panel has determined that bis-aminopropyl diemthicone is safe when used in cosmetic products based on the information currently available. According to Japan's Ministry of Health, Labor, and Welfare (MHLW), there are no restrictions on the use of bis-aminopropyl dimethicone in cosmetic formulations. Additionally, it is not listed in Annex II or III of the European Commission's Cosmetics Directive, which limits the use of specific chemicals in cosmetics.