I'm a 62 year old male redhead who does occasional outdoor construction in southern California. I've had several skin cancers cut out, and I'm very sensitive to the sun. I've been using this product as a part of my sun defenses for about three years. (I also use long pants, long sleeved shirts (SPF 50), and wide brim hats.) I have had no problems with sunburn, and compliments from my dermatologist for the way i've been protecting my skin. It does leave a white residue as the other commenter noted, but this is acceptable to me due to my overall light skin tone.