I've been looking into this for about a year... and its a pretty neat procedure to get back the look of a full head of hair... Basically they just replicate that shadow effect where you no longer have hair growing anymore.. and blend it seamlessly into your existing hair / shadow... matching your shade perfectly..... so in the end.. it looks like you have a full head of hair that was just shaven or buzzed real close... its undetectable.....
Sorry to wait so long to reply, but I have been away from home for various reasons and the internet just sucks ash in some places
I had the procedure done two years ago. It was more to conceal surgical scars from keloids and cysts, but for cost effective reasons, I had my MPB area done as well. So far so good, there has been slight fading, but in most cases, the technician will go a little darker to allow the ink to fade to fit your natural hair color.
Should you or anyone go through with this, the key is to shop around and ask to see the artist's work. Also, be sure to follow the aftercare and maintenance instructions. Proper care of your procedure could result in it lasting a decade or longer.
Best of luck in what you decide. P.S. I hope you're right about your MPB reaching it's limit if there is such a thing