For many though hair loss is no laughing matter. But now researchers in America say they've uncovered a cure.
The iconic look may work for a few - especially celebrities - like the rugged Die Hard star Bruce Willis and Star Trek's Patrick Stewart.
An academic medical centre has found that hair follicles actually shrink, but don't disappear.
Dr George Cotsarelis, dermatology professor at Pennsylvania University, found the discovery hair-raising.
“What we found surprised us. The stem cells were present but they were not doing their job.”
The discovery of invisible hair sounds too good to be true. But what does it mean?
“It really gives us hope that because the stem cells are present itlowers the bar for developing treatments that could activate the stem cells and get them to form a new hair follicle,” said Dr Cotsarelis.
Treating these faulty stem cells means that, rather than just maintaining hair, we could soon regenerate hair.
For celebrites, they will be popular whatever they look like. But for ordinary people, to be bald is, just like what is said in this paragraph, "no laughing matter".