Silicones in Hair Care: Making Innovative Solutions Possible

Posted: May 23, 2007

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In addition to their role as conditioning agents, a number of silicone materials have multifunctional properties in hair care formulations. These materials range from basic cyclic or linear polydimethylsiloxane (PDMS) to polyether- and amino-based fluids and silicone resins. Figure 1 shows some of the families of silicone materials used in hair care applications and their functions.

Figure 1. Functions of silicones in hair care products.

Linear PDMS, also known as dimethicone, illustrates the basic structure of silicone, based on a backbone of Si-O groups with methyl pendants. It is available in a range of molecular weights and viscosities, and it is commonly used in hair care products to reduce combing force, add slip, impart a soft and dry feel, and add shine. PDMS gives a lubricating feel without greasiness or tackiness, and it has a desoaping effect on formulations.