Your PSP looks dirty, playing your PSP a lot will leave the device to look bad, follow the simple steps below

Use a moist towelette to clean the screen.

Wipe with a cleaning cloth suitable for CDs or DVDs.

Use a screen guard in future. It can protect your PSP from dust or mud.

Note

Do not leave your PSP around a dusty place or outside.

A toothpick provides a useful tool for cleaning dirt in small cracks

Your PSP might become slippery when you wipe it, so be careful!

Be careful on what you use on your PSP because you could end up destroying it.