Dirty Down - Aging Spray: Soot Black (400ml)Soot Black ageing spray has a stronger, more powerful spray nozzle than our other ageing sprays. The spray deposits a semi opaque layer of black dye that creates a dirty, black old or aged look. The spray is water soluble and can be smeared and reworked by wetting with water, but much less water soluble than our other ageing sprays. Fast drying. Ozone friendly. Ageing sprays are water soluble, semi transparent sprays for ageing costumes and props.