Hi! I bought my car (kia Carens) two years ago with free 3m tint. It is a clear tint (I think it is crystalline but I am not sure). At first it is ok with us but lately my wife and the kids always complained about the heat and the lack of privacy. Hence; last week I decided to add another layer of 3m BC magic tint on the present tint.

Will the additional layer of tint provide added protection in terms of UV and heat rejection?