RainX bug and tar gel.Stay away from this product.It causes more work and inferior results compared to a simple detergent wash.I believe the "gel" component may be some type of wax, this is indicated by the water beading during the wash and rinse cycle.This is also indicated by the gooey residue build up on the wash sponge.If left on the car finish too long dirt "shadows" appear that are difficult to remove.