good for you man, sounds like you did it politely and tactfully without being a forceful unfeeling monster. Im sure she respects your choice, and even if she somehow doesnt like it she will still most likely keep going out with you. I highly doubt that the bald head would have any bearing on whether or not you two work out, especially given the responses shes given you that you shared.
When you see her next, dont mention it. Act like nothing ever happened, this is who you are, not the little bit of growth you had. If she brings it up, whether positively or negatively, just shrug it off and say "well im happy to be back to myself again" and let it go.