An essential additive if you want to explore wet-in-wet painting.  Allows artists to re-open Atelier Interactive even after it is touch-dry. Once the paint is re-opened, new paint can be blended back in, existing paint edges can be feathered or whole sections can be removed with a rag to reveal under layers. Spray apply using the Atelier Fine Mist Water Sprayer.  

Use For Tone Control

All acrylic paints darken slightly when they dry. The tonal difference between wet and dry paint is minimal for darker colors but can be quite dramatic for lighter colors containing a large quantity of  Titanium White in the mixture.  If you want to adjust light tone values and your painting is touch dry, it will return to its wet values if you spray it with Unlocking Formula and this will allow you to make accurate wet-to-wet adjustments.