Hi
I been cleaning my macbook Pro 2018 screen with lens cleaner ? is this safe it cleans very well and fairly responsible priced. could it damaged the display ?
Most lens cleaners are isopropyl alcohol, which is OK per Apple:
"Using a 70 percent isopropyl alcohol wipe or Clorox Disinfecting Wipes, you may gently wipe the hard, nonporous surfaces of your Apple product, such as the display, keyboard, or other exterior surfaces. Don't use bleach. Avoid getting moisture in any opening, and don't submerge your Apple product in any cleaning agents. Don't use on fabric or leather surfaces."
All you need is distilled water and a couple of microfiber eyeglass cloths. And try not to splash your food on the screen, those chemicals are far more caustic than any cleaner.
It's all I use on every Macbook I (or my family) has ever had. That, plus a microfiber cloth has worked just fine, and this includes any Retina models that had display issues (and I've had them all).