For years I have been a lucky one when it comes to sunburn. I hardly ever wear lotion and still hardly ever get severe burns for all the time I spend in the outdoors and out on a boat. I have history with only 2 bad burns.
My usual burn along the arms, hands, neck, legs, and face is a reddish brown that turns into a darker tan within 2 to 4 weeks.
2 reasons I could think are that I have healthy skin that is oily and moist and I have the southern Italian color.