Sandrii. provided a solution for people who have trouble controlling their mood, those who are fighting their laziness and those who don't get enough sleep. Sandrii.'s Mood Shifter is designed with Cranial Electrotherapy Stimulation (CES), a technology approved by the FDA in the United States. CES is a new way to overcome insomnia, depression, anxiety and regulate brain activity patterns. It is characterized by its safety and effectiveness. The effectiveness lies in the fact that the therapy directly affects the human brain and does not require the various processes of physical therapy. CES technology stimulates the central nervous system - the human brain. It weakens the delta wave, enhances the alpha brain wave, makes people feel peaceful and reduces the negative emotional impact. It also stimulates the secretion of endocrine peptides, melatonin and serotonin in the central brain as well as rejuvenating the body's mood and energy.