what the instructions dont tell you is that you almost need to break the tip or push it in to get it to work. and when you push it in it does not have the same point effect that i was looking for on my nails. in addition you have to do several coats to get the right colour and you have to put a clear top coat on after application or it will fade away, or get rubbed off. the idea is really nice, and the pen works on all colours. perhaps i need to find a way to use it differently and experiment with my designs. for now, i was disappointed in the result.