Answer:
Keep doing me to avoid lens dryness
I am an instrument that you can hear but cannot see or touch. What am I?
I always follow you around, everywhere you go at night. I look very bright to people, but I can make the sun dark. What am I?
I can be cracked, made, told, and played. What am I?
Tear off my skin. I won't cry, but you will. What am I?
The answer I give is yes, but what I mean is no. What was the question?