Here is a really good reason not to use weird trendy hair wax stuff that is blue:

When you’re at a client meeting at work (just you, the client, and your boss), you might turn your head and hear something hit the piece of paper that you’re taking notes on. When you look down, you might see a glob of blue hair goo sitting on your paper. You might try and cover it with your pinky finger, hoping no one noticed, only to realize that it’s bigger than you thought, and that it’s smearing all over your notes. You might hope that no one would have seen it, but then realize that, by squishing it, you’ve released the distinctly hair-product smell into the air, and now even if they didn’t SEE it, they surely SMELL it and are thinking “Why is the copywriter totally staring at her pinky finger? And why is it blue?”

All that might happen, so I suggest you use clear hair goo, and make sure it’s evenly distributed through your locks before going to work.