Why You Shouldn’t Put Permanent Marker on Your Skin
There are a few things to keep in mind before using a permanent marker.
Is Permanent Marker Waterproof?
After reading this article, you may know whether permanent marker is waterproof.
Which Colour Pen Is Best For Learning?
The question of which colour pen is best for learning has always been a source of debate. A recent study suggests that using a blue pen actually hinders the effectiveness of marking. However, another study suggests that using red ink is the most effective way to learn. The study did not include teachers, so it […]