Got the same brand (the master) but as a green soap.
It really helps removing the last bits of paint (acting like a soap) from the bristle, and you can also gently rattle it tu be really sure there are no more paint in.
Also if I remember it has some components that helps preserve the quality of the tip, and also the glue that keep it nice and thin. In practice, using it for ~3 months now my brush lifespan has triple ^^. Tips stays firm longer, do not fork anymore, and smells like chlorophyll *-*
Life changer if you have a low budget and like to paint tiny details.