In the context of car shampoos, a conditioner is an additive that softens the surface and facilitates its subsequent polishing. It has anti-static effects, reduces friction during hand washing and promotes even distribution of the product over the bodywork. It leaves a fine protective film on the surface and often contributes to a smooth and glossy appearance of the paintwork. Conditioners are suitable for regular vehicle maintenance without damaging existing wax or ceramic coatings.