Shake the bottle well before use. Biltema Caravan/Motorhome Polish can be used on both old and new oxidised paint. Apply the polish to a limited area and polish in. For heavily oxidised surfaces, polish hard or use a machine. Allow the polish to dry until a grey film forms. Use a dry cloth or rag to polish in. For lasting protection, Biltema Caravan/Motorhome Wax is recommended.