Why not? If you have a unique hairstyle and want to market it, you can register it with the patent and trademark office. A hairstyle is a human creation and, like most creations, it can be an asset, and in this case, it is an intellectual property. If you get a trademark, other people will have to get your permission just to copy it. However, you will first be required to officially file it at the patent and trademark office and pay the official fees and do the necessary paperwork for filing. Of course, a brand needs a name, so you will have to find one, as unique as possible, so that the trademark office has no reason to reject it. But for all intents and purposes, the trademark is a means to prevent others from using the same idea and form, whether for their own or commercial purposes.
However, whether you will be allowed to register the trademark will depend on the trademark office, but there is a strong possibility that it will. Now, for a trademark to be allowed, its shape must be unique, something that can stand out from the crowd, so that people can identify it as different from the norms. Like company logos, your particular hairstyle must be reproducible and it must also be identifiable by name. For the purposes of trade, the form and name will be easily identified so that others can communicate with others about it.
A hairstyle should not only consist of hair only, but it is also possible to weave it with some other elements such as hair bands and bracelets. In fact, you can make it look unique with a wide range of hair accessories or something that you design yourself. And remember, if it’s new and no one has it, you can archive it and personalize it. After which you can market it and license it to other salons to recreate that particular hairstyle. Of course, you will have to make it so desirable that others will want to copy it and pay you a fee for doing so.
And on second thought, maybe those people who had been promoting fashion shows should have applied for the trademarks of all the girls who had sported unique hairstyles as part of the fashion presentations.
But what if someone copies it without paying you for the idea? Well, getting a trademark is one thing, enforcing it is another. The responsibility is that you will have to report any form of infringement and take legal action yourself. But even if you don’t get a penny for the idea and assuming the particular hairstyle turns out to be a hit, only the people talking about it will inevitably increase the value of your idea and your trademark. If it is a buzz, it will benefit many times over. Also, that trademark doesn’t need to be associated with just a hairstyle, as you can also use it for other things, as long as of course you also register it under other item categories at the trademark office. The opportunity is limitless as we are not just talking about humans, but others like pets and anything else that needs a unique dressing!