* Privacy: Straightening hair is often a personal grooming choice.
* Varying definitions: What counts as "straightening" can range from a quick blow-dry with a brush to more intense chemical treatments.
* Lack of comprehensive data: There aren't widespread surveys that specifically track this statistic globally.
* Cultural and societal influences: The popularity of hair straightening among men varies by culture, age, and social group.
Despite the absence of a concrete figure, it's fair to say that:
* The practice is more common among men with naturally wavy or curly hair who desire a different look.
* Hair straightening among men has likely increased in popularity over the past few decades due to changing trends and the availability of more accessible styling tools and products.
If I had to give an estimate based on observed trends, I would guess somewhere between 2-5% might straighten it on a regular basis. The real number is likely much higher if you include men who occasionally straighten their hair for special events.