Light Energy and Sunscreens

By: Peter T. Pugliese, MD

Posted: March 26, 2009, from the April 2009 issue of Skin Inc. magazine.

Figures

• Figure 1: Basic Electromagnetic Physics
• Figure 2: The Electromagnetic Spectrum
• Figure 3: Reflected, Transmitted and Remitted Light
• Figure 4: Light Rays
• Figure 5: UV and DNA
• Figure 6: Penetration of UV Light into Skin

Sidebars

• UVB Sunscreens (290–320 nm)
• UVA Sunscreens (320–400 nm)
• Fitzpatrick Skin Types and the Sun

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