It's SPF4, which is why it's more of a tanning lotion than sunscreen. I wouldn't wear just this for a long period of time in the sun, especially if you burn easily, but it does tan nicely under short periods of time. I have fairly sensitive skin and it's never been a problem. Sunburnt skin is a different story - I would not recommend this, you'll only get more burnt.
Candace C. asked, “What is the SPF of this sun lotion? or is it safe to use for sensitive skin or on sunburnt skin?”