I design websites specialising in hair extensions, hair websites/businesses. Is 'Hair and Beauty Websites' too boring?
Are straightforward names better than creative?
If for a business identity, I see nothing wrong with using 'Hair & Beauty websites' as a descriptor to accompany the business name, which can then be a little more creative, if desired.
Alternatively, you could use something like
Silky Smooth (Name)
Salon Websites (descriptor)
Either way, make sure the descriptor phrase is in your keywords. You don't have to be boring, so long as you've got the pragmatic bases covered.