Consists of an airtight container containing a moistened sponge covered with a special sheet of paper that allows moisture to pass through
The container is composed of a lid and a base with a rubber seal that ensures watertightness and keeps the internal humidity for a long time
The sponge and the water needed to keep it moist are placed in the base
The hydration sponge holds water and provides a constant source of moisture to the palette paper, preventing acrylic paints from drying out quickly
The moisture-retaining paper allows moisture from the sponge to reach the surface and is strong enough to prevent it from breaking down or decomposing when in contact with the paint
