SpectraFix 4oz Fine Mist Spray Bottle (Refillable Bottle) - SpectraFix casein-based pastel fixative utilizes milk protein and grain alcohol to provide you with a non-toxic, fully archival fixative for all pastel, charcoal, conte, watercolor, gouache, and mixed media techniques. It holds and protects your media without dulling your colors, and because it is all-natural and odor-free, you can spray your project indoors while you work. No more unhealthy fumes or odors or waiting outdoors! SpectraFix leaves colors brilliant without altering the hue and dries quickly to an invisible matte finish, providing traction to allow multiple layers of pastels. Works beautifully on all papers. Environmentally friendly bottle is non-pressurized and recyclable, and utilizes the highest quality fine mist pump sprayer to easily disperse fixative over your project. All SpectraFix products are ASTM D4236 certified to protect your health. This 4oz Empty Fine Mist Spray Bottle is for mixing up SpectraFix concentrate. Compact 1.5x 6 inch size fits easily into your equipment case. Same high-quality USA made pump as the SpectraFix 12oz bottle.