The shape of the scalp massager is designed for comfortable holding by one hand to move the massager around the head. The four massaging heads rotate in different directions to provide massaging actions. The medium-hard tips of the massager head provide relaxing squeeze and release actions. The massager heads can be removed for washing. I would have given it 5 stars if it also comes with a set of hard plastic massaging heads to give a more invigorating massaging actions, if one wishes. The massager can even be used over the face and cheek bones to get some squeeze and release actions. The power button at the top of the handle allows for 2 speeds with the heads moving in one direction and 2 speeds in the reversed direction. The unit takes about 2 hours for full charge and is good for about 30 minutes of continuous actions or 4 x 8 minute sessions.

Very effective! I was concerned about fur getting tangled in the rotating massage heads, but they work in such a way that it is not possible. Also works nicely on humans.