This is a great product,the two iron head are very heavy,I used big one on my forehead and cheek,small one for eye area and chin,I started to comment after using it twice. The first time I read the whole manual do some research to see how it works,then try on my arm first, if you didn't apply gel on it,your skin feel little sting,when second time I use it, it was convenient. Just squeeze the gel on the iron head, it feel like B-ultrasound, slowly circulate back and forth on the face. Remember to squeeze the gel, otherwise your skin will be too dry to push back and forth. When doing it, one side at the time, otherwise gel dry fast. I do within 20 minutes. There were 3 levels ,I used level 1,because level 3 was to hot for me,after you used,your face feel hot,then I washed away remaining gel, then apply my own skin care steps,be sure you read the manual ,because there are some restrictions, such as pregnant women. It can’t be used during breastfeeding. I try to use my own essence instead of the gel, but the essence dries too fast. The gel is written in Chinese. I use Google Translate. So It’s not a big problem. There are no ugly women, there are only lazy women. If you want to be beautiful, you have to take time to manage your skin, because people cannot withstand the toss at a certain age. Overall I'm very satisfied with product.