Bro, Wrong comments given.. Infact you got the whole thing wrong.. You comments were as Follows:
No Cleaning : Bro , does it anywhere on the bottle says that it will Clean ?
Blackening Properties : Bro , It never says that this product would enhance the blackening properties...
Smears when dried : Spray this on the surface and then even it out with a foam applicator. Problem will be solved
Produces No Shine : Again bro, The bottle no where states that it will produce shine ? Nopes..
This is just a shine RESTORER... RESTORER... If you have Shiny Black Trims who have lost its Shine, This product would Restore its shine... THAT IS IT !!!! Not that if applied on a matt black trim would make it shiny.... It will just bring back the trim to its original look.... Hope you get my point.
From My Side this product scores a 10 / 10 score... It does what it says.....