Sun protection factors of proprietary sunscreens can be determined with precision.
D004341:Drug Evaluation; D004348:Drug Labeling; D006801:Humans; D013471:Sunburn / Q000517:prevention & control; D013473:Sunscreening Agents / Q000592:standards*; D014481:United States; D014486:United States Food and Drug Administration
D013473:Sunscreening Agents