I am pretty dark but as a child I used to sunburn and in the summer I suntan to a NC50. In the Spring, I naturally get lighter and lose the tan and get a NC45. I do not get sunburns anymore. As a child I was much lighter than a NC45 though. As I get older I wonder do I have damaged skin? I don't have pictures from my childhood. However I was wondering what is the darkest you can be and still get sunburns?