Dirty Down is a brand specializing in ageing and weathering effects.
Dirty Down is a brand specializing in ageing and weathering effects products for film, television, and theater, used to simulate the appearance of aged and weathered materials. Their products, particularly the ageing sprays, deposit a semi-transparent, colored dye that makes new surfaces appear old and dirty. These sprays are water-soluble, allowing for smearing and reworking with water to create realistic dirt and stain effects.