The Curaid face massager device is well packaged, simple and clean. The design of the device is very ergonomic and anti-slip and easy to clean, charging is fast via a standard USB A cable. When used with the serum you have 3 types of vibrations, there are all relaxing in different ways but very stimulating at the same time, leaving a feeling of lightness on the face like an after-scrub treatment. The red and blue LED function with attached hot and cold is truly the most stunning part of the device. With the red LEDs and the heat you feel a pleasant numbness and the serums seem to be absorbed more easily into the skin of the face. The blue LED leaves a fresh ice effect on the face, immediately lightening the redness of the skin. I suggest you use it at the end of the treatment. Final rating 9.5 out of 10. I LOVE IT !! Congratulations Curaid, Well Done!!.