High-SPF sunscreens (SPF ≥ 70) may provide ultraviolet protection above minimal recommended levels by adequately compensating for lower sunscreen user application amounts.

@article{OuYang2012HighSPFS,
  title={High-SPF sunscreens (SPF ≥ 70) may provide ultraviolet protection above minimal recommended levels by adequately compensating for lower sunscreen user application amounts.},
  author={H Ou-Yang and Joseph W Stanfield and Curtis Cole and Yohini Appa and Darrell S. Rigel},
  journal={Journal of the American Academy of Dermatology},
  year={2012},
  volume={67 6},
  pages={1220-7}
}
BACKGROUND The manner in which consumers apply sunscreens is often inadequate for ultraviolet protection according to the labeled sun protection factor (SPF). Although sunscreen SPFs are labeled by testing at an application density of 2 mg/cm(2), the actual protection received is often substantially less because of consumer application densities ranging from 0.5 to 1 mg/cm(2). High-SPF sunscreens may provide more adequate protection even when applied by consumers at inadequate amounts… CONTINUE READING