This vintaj patina kit are opaque inks that have been specially formulated to adhere to metal. Use to create beautiful, durable and permanent patina effects. The ink is fast drying and can be heat-set for added durability. The patinas will colorize vintaj natural brass company findings and filigrees for gorgeous jewelry and crafting projects. Fast drying satin finish. No acids and UV safe. Conforms to ASTM D-4236. Made in USA. Set includes contains three 0.5-Ounce bottle. Available in retro highway kit include onyx, ochre and agate color.