 And then that blue light activates whatever that solution is and takes off, you know, your thin layers of skin cancer and all that kind of stuff. Well, it used to be that you would go in, and I'm just saying paint you up, but they break these little tubes up with this solution, and then they paint you up, and then you had to go away for two hours and then come back. Well, the problem you have is that the UV rays activate this stuff. Yeah.