I use sunblock when I go out. Mine is Loreal SPF 30. I apply it 30 minutes before I go out as recommended by my dermatologist of any sunblock. I reapply it every after 2 hours when I am outside. It works very well with me. It's actually the first time that I've tried it as I was not pleased with other sunblocks I've tried in the past. And I think I am going to stick with it for a long time.
