Storytime with Dr. G

August 10, 2016

Lesson 1: UV rays (part 1 of 3)

LESSON 1: UV rays What is the difference between UVB and UVA rays? UVB rays (290-320nm) are the main cause of tan and sunburn because they damage the skin’s more superficial epidermal layers. UVB rays play a big part in the development of skin cancer, and a contributory role in photoaging and tanning. UVB rays account… Read More