Acrylic brushes are made of red sable hair, and gel brushes are typically made of __________?

Gel brushes are designed to work with gel products, which are thicker and require a different type of bristle compared to those used for acrylic applications. Synthetic materials are used in gel brushes because they offer durability and resilience against the viscosity of the gel. These fibers can be stiffer and more structured than natural hair, allowing for precise application, better control, and the ability to withstand the heavy thickness of gel products.

Using synthetic bristles also helps provide a consistent performance, as they do not absorb moisture like natural hairs, preventing any unwanted changes in the brush's performance. The combination of these properties makes synthetic material the ideal choice for gel brushes, enabling nail technicians to achieve the best results.