It varies from person to person. Some people use Chlitina products just like changing their skin. Some people are allergic, and most of them are good. It is recommended to buy some products of Chlitina, which have a good effect at home. I only go to the beauty salon occasionally. I use EPO series. I have also used protein cream and EG cream. The skin is ok. It is best to buy in a reputable shop on the Internet. It's half cheaper than in a beauty salon.