Answer:
Whoever made me doesn't want me. Whoever bought me doesn't need me. Whoever uses me doesn't know me. What am I?
Everyone asks for me but yet everyone hates to face me. For someone I am agony, for others I am relief! What am I?
I am pronounced as one letter, written with three. I come in blue, black, brown, or grey. Reverse me and I read the same either way. What am I?
I have roots that no one sees and I am taller than trees. Up, up I go, but never do I grow. What am I?
Four fingers and a thumb, yet flesh and blood I have none. What am I?
Keep doing me to avoid lens dryness