What pens should you use for black paper and why? - Quora
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What are good pens/markers for drawing on skin? - Quora
Do you like to doodle on yourself with a pen or marker? What do you draw? - Quora
What pens should you use for black paper and why? - Quora
What ink pen can be used for tattooing? - Quora
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What happens if you draw on your skin with a pen? - Quora
Is it safe to draw on your skin? - Quora
Why are sharpies permanent but other pens/markers are not? - Quora