Paintball ball (paint ball) is a non-toxic, water-soluble, biodegradable paint, surrounded by a gelatinous capsule. Paintball balls are absolutely safe, they can even taste it:) the Shell is made of materials that are remarkably soluble in water, i.e., at high humidity it will absorb moisture like a sponge. The paint also does not contain water and when the skin begins to absorb water, it is transmitted further into the paint.