Here are some easy tips to help with yours. Soap scum and mineral deposits will come off those doors easily with some laundry pre-wash spray . Just spray it on, wait a minute and wipe it off.
Baby oil can also help break through that hardened scum.
Just put some on a wash cloth and scrub the door clean. You can prevent that build-up from occurring in the first place by buffing the door with some lemon oil on a soft cloth. To clean your shower door track , pour some vinegar onto the track to fill the space. Then scrub it with a bottle brush . Lay some towels outside the tub and pour some hot water into the track to flush out the vinegar.