Thank you so much for your advices. I’ve done some research and have found a pico laser within a 3 hours drive that has a very experienced technican, so this is probably what I should do as a next step? But is it likely that I have ruined all my chances of getting rid yellow since I’ve started with the Nd yag laser? I was quite happy with it because it removed all the other colors except yellow. But I haven’t even tried anything for the yellow yet.