brother in karachi u can find detailer spray at many places, but i would recommend:
- Saca Plus at rimpa plaza
- hyperstar at clifton
at these places, the prices are good and the products are original, i bought my products from both of these places, so im satisfied with them, i bought some stuff from Makro as well, u can check it out too !
tell me where would it be convenient for u to go, and i'll guide u with the available options.