A high-quality, non-toxic water-based acrylic shade wash produced by Games Workshop.
It is specifically formulated to automatically flow over other base layers and settle into the recesses of plastic, resin, and metal miniatures. 
This creates instant, realistic shadows, depth, and lowlights with minimal effort.
It is a vibrant dark crimson/deep red wash featuring a prominent warm, brownish-orange undertone. Unlike older magenta-based red washes, it mimics the appearance of oxygenated or drying blood. When pooled over flesh tones, it can create a distinctive "sunburnt" or flushed look.