 So, and this goes for myself as well. Like I do this for myself. There is an app that you can download. It's called D-Minder, like re-minder, R-E-minder, but it's just D-M-I-N-D-E-R, D-Minder. And you'll type in, here's what my, like what the skin looks like, what complexion is at one. So for me, if I do burn, I'll typically get red once and then I'm good for the rest of the summer.