Its problem is the roll-on that doesn't work well, resulting in it dripping on the floor when I apply it to the children, and generally it seems to be too liquid for a roll-on. Otherwise, I didn't have any particular problem, it absorbs quickly and hasn't caused any irritation, etc. I can't say for sure about sun protection because I use supplements and other products. I bought it purely because I thought it would be easier to apply due to its mechanism. I probably won't buy it again.