The frictional force acting on an object always opposes the direction of motion, regardless of the surface it is on.

Friction is a force that arises whenever two surfaces touch and one tries to slide over the other. Because it resists relative motion, the direction of the frictional force is always opposite to the direction in which the object would move if no other forces acted. This rule holds whether the surfaces are rough, smooth, rubber on pavement, or ice on steel; the only thing that changes is how strong the friction is, not its direction. For example, if you push a box across a table, the friction pushes back on the box, slowing it, no matter how hard or smooth the table is. Thus, the frictional force always points against the motion, regardless of the surface.