The FDA is currently investigating the risks of accidental inhalation of spray sunscreens. The challenge in using spray sunscreens is that it is difficult to know if you have used enough to cover all sun-exposed areas of the body, which may result in inadequate coverage.
Never spray sunscreen around or near the face or mouth. Spraying adequate amounts of the sunscreen into your hands and then applying the sunscreen can help you avoid the fumes while also ensuring adequate coverage. When applying spray sunscreens on children, be aware of the direction of the wind to avoid inhalation.
– See more at: https://www.aad.org/media/stats/prevention-and-care/sunscreen-faqs#sthash.cEx4WwuX.rkj3U1Tu.dpuf