What is the difference between UVB and UVA tanning rays?
UVA, more commonly referred to as the “bronzing” ray, is a longer wave and penetrates further into the skin than UVB. UVB, or the “burning” ray, is a tighter, more intense wave that releases its energy closer to the skin’s surface. Because of this, UVB is more likely to cause sunburn than UVA. Today’s tanning units use a carefully controlled mixture of both UVA and UVB to help prevent tanners from burning as quickly or easily from the natural sun.
