due to excess sun exposure and heat plastic trims of car and dash board upper part usualy become dry, thirsty and start showing whitish , thirsty looks.
dedicated plastic trim restorers are made for such purpose but they hardly available here. u can use any interior dash board protectant on car trims however first u have to wash / clean them properly
if any friend or relative coming from abroad request them for meguiar's ultimate black, in usa its about us$8
ye tu hogyia official byan now desi totka 
wash and dry properly than use any of hair oil available in home like olive oil and give good massage to the effected area, give some time and then by help of dry towel remove excess oil and apply any dash board protectant spray
iss se be zeyada assan totka 
when ever u come lahore drop at my place, just in 15 to 20 minutes will make them black shiny as like new 
