Copyright © 2002 American Medical Association. All rights reserved. From: The Teaspoon Rule of Applying Sunscreen Arch Dermatol. 2002;138(6):838-839. doi:10.1001/archderm.138.6.838 Figure Legend: Sun protection factor (SPF) of 3 titanium dioxide sunscreens measured for increasing doses of sunscreen applied in vitro. Date of download: 11/2/2017 Copyright © 2002 American Medical Association. All rights reserved.
Copyright © 2002 American Medical Association. All rights reserved. From: The Teaspoon Rule of Applying Sunscreen Arch Dermatol. 2002;138(6):838-839. doi:10.1001/archderm.138.6.838 Figure Legend: The amount of sunscreen needed to be applied to each body area to reach approximately 2 mg/cm2 and to achieve the full rated sun protection factor. Date of download: 11/2/2017 Copyright © 2002 American Medical Association. All rights reserved.