Dirty Down: Mid Brown Ageing SprayAgeing sprays are water soluble, semi transparent sprays for ageing costumes and props. One quick spray deposits a fine layer of semi transparent coloured dye that makes clean surfaces appear to be dirty and old, or to have aged. Quick and easy to use. Mid Brown ageing spray is a fine mist semi transparent spray dye that makes things look dirty and old, or aged. Dirty brown green colour, a slightly greener shade than Dark Brown. The spray is water