I feel like this product has been really great with a lot of gel products I've been. Although I do feel that what outlet I use for this machine makes a difference. I don't think the machine itself is regulating the wattage at all. there have been occasions where using one product in my house I've burnt someone, then using the same product and same machine and same time in my work space of not burn someone. I am going to consider buying some type of accessory to maybe control the amount electrical wattage that comes into the machine. And if that doesn't do the trick I really don't know what I'm doing wrong