1.ultraviolet A short UVA radiation that has a wavelength 320 to 400 nm UVA rays will have up to 95% of this type of radiation can be through glass. Although we are located in the building and enters a deeper skin layer is the dermis of our. Can go press the immunity of the skin, the barkeep, as a result, the body is not able to protect the skin from the birth and spread of skin cancer. In addition, UVA also hurt the skin, making skin premature wrinkled. Age spots occur UVA about Aging