Slip modifier

Ingredients with the function of a slip modifier improve the sensory properties of cosmetics: they make application softer, more uniform and more comfortable, help the product to spread more easily over the skin or hair and reduce the feeling of stickiness. In skin formulas, they often give a smoother, silkier or "powdery" finish, and can also visually enhance the evenness of decorative products. Manufacturers of silicone cosmetic materials directly describe such effects as smooth feel, silky feel, increased spreadability and reduced tackiness. (dow.com)

In hair products, such components improve the sliding of strands between each other and during combing, so the hair feels softer, more manageable and less tangled. In creams, primers, sunscreens and tonal foundations, they affect not only the sensations after application, but also the texture of the product itself: they make it more "gliding", facilitate shading, and help create a light coating without a heavy or greasy trace. Silicone materials are especially often used in this role, as they combine good distribution with a not too sticky finish. (dow.com)

Typical examples of such ingredients are Dimethicone and Phenyl Trimethicone. Dimethicone and its elastomeric forms are often used for a smooth, velvety glide and a more comfortable texture, while Phenyl Trimethicone is known for its ability to improve distribution, reduce stickiness, and give skin or hair a softer, well-groomed feel. Therefore, the components of this group are valued primarily for making the product more pleasant to use, even if their main task is not directly related to active care. (dow.com)