Rubber base gel is a type of gel used in nail care. It is a flexible base coat that bends together with the nail, making it more resilient to chipping and breaking. A base coat of any kind is formulated to be the layer that adheres to both the nail plate and the coating above. Rubber base gel can be used like a thick gel polish base coat or like builder gel. It is a file off or soak off product, which means it can be removed by filing or soaking in acetone. Rubber base gel is slightly runnier and harder to work with for building nails compared to builder gel. It is made to mimic the way your nail is, making it more flexible. Rubber base gel is suitable for those who have short natural nails.