Answer:
Keep doing me to avoid lens dryness
I am useless when together but useful when I am broken apart. What am I?
I am a type of weapon for SCI-FI characters
I am black within and red without; with four corners round about. What am I?
My first 2 letters signify a male. My first 3 letters signify a female. My first 4 letters signify a great. I signify a great woman. What word am I?
A little house full of meat, no door to go in and eat.