Less than 25% of available sunscreens meet consumer watchdog group recommendations for safety and effectiveness. Sunscreens should offer broad spectrum protection (UVA/UVB), an SPF of 30 or higher, ... According to a new study, Tolerance-induction phototherapy with UVA or NB-UVB is a safe and highly effective first-line treatment for solar urticaria.

Understanding the Context

It offers durable phototolerance ... ‌UVA and UVB Rays are different types of a form of energy called ultraviolet (UV) radiation commonly seen as sunlight. Both UVA and UVB rays can cause harm to the skin. But there are some health ...

Key Insights

MSN: How does sunscreen work, and what does SPF, UVA and UVB mean? How does sunscreen work, and what does SPF, UVA and UVB mean?