I would say I start with fast mode and the work my way up to high. It’s fantastic because u don’t have to use any kind of gel during the process. Only after the use of IPL u have to use Aloe gel which is already provided by ULIKE. Which I also have to say not many brand do this they r expensive and they don’t provide much things that ULIKE provides such as the glasses, 2 razors and 2 Aloe gels. They also have a small pouch to keep the things in it.