We need Vitamin D, but probably not as much as you were thinking. Your face is burned and your pride (okay my pride I'm an aesthetician) is hurt from your very burned skin. A lack of vitamin D can cause a loss of bone density, muscle weakness, weak immune system, depression, even hair loss. While the easiest way to make sure you are getting a good amount of D is to expose yourself to sunlight, you want to limit your exposure to 15 to 30 minutes. People who have fair or sensitive skin will want to opt to the 15 minute limit and those with more pigmentation will look at the 30 minute zone. You'll notice that neither of these times is that long which is where I slipped up... And I really do know better.