An all-natural, non-toxic, and odour-free archival fixative for pastel, charcoal, watercolour, and other delicate media. It is based on a historical recipe used by French artist Edgar Degas. It is casein-based and can fix pigments without dulling colours. Perfect for fixing underdrawings beneath oil or acrylic paintings to prevent smudging. No more obnoxious odours or unhealthy fumes.