What is the difference between UVA and UVB?
UVA and UVB are ultraviolet rays emitted by the sun. They enable the skin to tan but are also very harmful.
They differ in intensity and wavelengths:
• UVB rays have medium wavelengths and act on the skin’s surface. They are responsible for sunburn and burning.
• UVA rays have higher wavelengths and penetrate the skin in depth; they lead to accelerated aging and reduce the skin’s elasticity.
In the long term, UVA and UVB rays may be responsible for a range of skin cancers.
It is therefore indispensable to use dual sun protection (against UVA and UVB rays), in particular for children.