EXP08 Sunscreens: What's Controversial, What's Misleading, and What's New
DESCRIPTION
Sunscreens were developed to prevent sunburn. The sun protection factor (SPF) quantifies this UVB protection. Photoaging, melasma and other dyspigmentation affect both light and dark skin and appear substantially due to chronic UVA exposure, encouraging development of broad spectrum sunscreens that typically contain chemical and/or mineral filters. Chemical filters effectively block UVB but raise concerns regarding systemic absorption and environmental damage, while conventional mineral filters provide good UVB/UVA protection only if they remain visible on skin. New technology comprising smaller and more uniform zinc oxide particles employs MIe scattering to overcome the safety, efficacy and cosmetic issues now impeding photoprotection.
LEARNING OBJECTIVES
Identify positive and negative characteristics of conventional chemical versus mineral sunscreens
Define “broad spectrum” designation and understand the rationale for long wave UV protection
Define “broad spectrum” designation and understand the rationale for long wave UV protection
DIRECTOR
Sandy Sharon Tsao, MD, FAAD
DISCLOSURES
Sandy Sharon Tsao, MD, FAAD
Beiersdorf, Inc. – Consultant (1099 relationship)(Honoraria); Epiphany Dermatology – Advisory Board(Stock); WorldCare Clinical LLC – Consultant (1099 relationship)(Honoraria);