Is it safe to oil my hair with olive oil and go in the sun?
It is just fine to put olive oil on your hair and go out in the sun. Massage the oil into the ends of your hair, not your scalp, unless you have incredibly dry skin. There are people who swear by mayonnaise or baby oil as a hair conditioner.
Yes it is and the heat from the sun will work the olive oil in to the hair shaft. :)