Did i get scammed?

I recently just got "ceramic" tint on my car. I got 15% all around and 30% on the windshield. The reason i chose ceramic is because i know it is supposed to deal with the heat much more effectively than normal tint does, however, with the sun being out more often, i feel like the tint is making no difference than b4. Is it cause the windshield is 30%? Is there any way i could check to see if it's actually ceramic?