Wow Andrea, this is a great drawing and you've put so much thought into your PSN 300! I've read your full description and I love that it does so many different things and it will help anybody with long or curly hair. Not only can you comb your hair quickly, you can remove tangles and you can add conditioner if it needs it too, and you can control how much you use. This would be a very clever invention for hairdressers too, it would make their job so much easier! This is a wonderful invention, keep coming up with more invention ideas!