That's pretty much what I've had over the past week of being sly. Pretty much zero reaction. I've had a total of two comments; so I'm pretty much assuming most people either haven't noticed or cared. I did keep my hair quite short (beard trimmer with no guard) for a number of years, so it's likely most didn't even notice. (Which tells me I already looked more bald than I thought

)
The first person to notice (and say anything) was my four year old son, but that wasn't until 3 days after I'd started shaving; the other was a friend just yesterday. My wife still hasn't said anything on the subject, so either she hasn't noticed or doesn't care about it...
My son was cute about it. He just got a bit of a silly grin and said, "Dad how did you get your hair like that?"
When my grandson was about 4 he aske "why has my hair moved from my head to my face". He was rather concerned.
I said only special people had that combination.
The first person to notice (and say anything) was my four year old son, but that wasn't until 3 days after I'd started shaving;
My three adult daughters took three days to notice my head shave last January.
I did mine before a formal event and my family didn't say anything the only person who said anything was my best friend and he asked if he may touch my head.
He proceeded to ask the magic 8-ball a question lol
I don't know very few people will ask why, I've only been asked why twice.