This was done during the latest Inktober challenge. Day #3 prompt was Poison. This was the first thing that popped into my mind - hate is poison! It creeps into your thoughts, eats you from inside out and literary poisons your mind. Eventually, the hateful thoughts show on your face as well - your looks become darker, even your skin becomes grey and wrinkly.
This is what I imagine real hate does to people and you can always recognize those whose mind is filled with hate. Hate is poison.
But, I consider this piece a positive one (with a dark twist ;) ).
It says: Don't be hateful or you will become ugly!
You can check this link out if you wanna see how it looks like on some products: http://rdbl.co/2BVsi9F