This Warm Sunshine mixed media ink from Altenew is a pigment ink which is water-based and will give you a fine, detailed impression every time you use it. This ink is fade resistant and becomes permanent once set with a heat gun or iron. This ink is acid free and archival, which means you never have to worry about it destroying your precious memories. This ink can be used on many porous surfaces such as paper, fabric, wood, and more.