In addition to the unique multi-sensory properties of Happy Senso, Happy Senso Neutral Artist has the color blue. This variant with the blue color can be used separately, but it is also advisable to experiment with mixing with other colors from the Happy Senso artist set. Furthermore, Happy Senso Artist Neutral has no scent after use. Happy Senso Neutral can be felt, heard and seen. The intensity can be varied in different ways.