In several Curezone forums, I've read that a good PH balance and a clean organic diet are major factors in tanning/not burning. One day, after about a month of eating really well, and LOTS of dark green vegs, I went out to water my garden at 9:00 a.m. wearing a bikini. I had intended to stay out about a half hour. I got carried away and didn't come in until 12:30. I didn't burn at all! I actually looked a bit brown! I am light skinned and usually that much time in the midday, mid-summer sun would leave me quite red. I just thought it was very interesting!