If you want to protect your Quest lenses from scratches, I would highly recommend the VR Lens Lab Oculus Quest lens inserts. I got the non-prescription lenses which act like a lens
How to fix scratches on VR Headset lens - Oculus Quest + PolyWatch - YouTube
I can't clean off this stain on my oculus quest's lens. Any idea how I can remove it (I already tried with the cloth that you use to clean your glasses) :
How To Sanitize And Clean Your Oculus Quest, According To Facebook
How to Clean an Oculus Rift Headset and Accessories
How to Clean Oculus Rift Lenses: 14 Steps (with Pictures)