As also said Lolita, it's best to use it at night, in fact, I also had redness and plates but the next day there was almost nothing: it is true that the first use, we tend to want everything, AVOID! ... Go gently, gradually.
Overall I would say it is a good product by cons for women who have very sensitive skin or prone to strong reactions may be excluded. Suggestion, if you have a friend who has one, test his, depilation head cleans and disinfects very well.
After at each view based on its skin and its sensitivity!