Once again, thanks everyone for the support!
There hasn't been a week yet, but this experience has proved very enlightening in my path to growth.
First things first: Shaving my head was an outstanding way of declaring ownership of my deeds. All of my life, I've looked for others for approval and guidance. We are raised to do such thing (I mean, it's part of growing up: You pay attention to your parents, your teacher and is rewarded/punished according to your behavior), but then, comes a time in your life where these persons have no longer any power over you...unless you allow them to. After a very interesting conversation with my best friend, I came to understand that the only limitations and obligations we perceive exists only in our heads. We can do whatever we want, if it pleases us and we're ready to face the consequences of our own actions. Self-accountability.
Secondly, I found out that hair is not a big deal at all. I can let it grow and I can shave it whenever it pleases me. It's my head and I do it like I want to do it. Looking at the reactions I've received, shaving my head was no different than keeping my hair. Some liked, some didn't. I don't care either way, as long as I feel comfortable with myself. If, one day, I feel I should change, I can do either and be happy with it.
Third, I may admit that shaving my head was a bit of attention seeking. I was feeling unremarkable with the way my hair was and wanted to bring some change to the table. I did it. But I somehow feel that, after shaving, I had to put up an attention seeking behavior to show everyone about my head. And only because I wasn't so sure about it. Kind of contradicts with what I have said in the first paragraph, but I have only achieved that thought after realizing this.
Finally, I'll tell you guys: I'll let it grow back for now. I have killed my doubts and no longer fear my head, and at the same time, the experience has been enlightening and fun. But ultimately, the decision is mine, and I am feeling bad because, for this time in particular, shaving my head was an act of attention seeking and I am feeling wrong by keeping my head shaved.
(Hair will grow back and everyone will forget. And then, one day, I will go and shave it again. I already know how it feels and I'm completely comfortable with the looks of it.

This time was an experiment in self growth and I feel I got what I sought in the first place.)
And finally, I plan on doing a time lapse of hair/beard growth during this growth period. I may post it here when I'm sly again!
For the Nth time, thanks everyone for being incredibly supportive and allowing me to have this outstanding experience!