How do I expand and find different targets within a sub-niche?

So my niche is a sub-niche, it's dreadlocks, which is a sub-niche of natural hair. And so if I were targeting natural hair, there are lots of influencers and products and brands that I could target, but not so much, being the case for specifically dreadlocks. So I'm trying to think about how do I expand and find different targets when there's really not targetable...