Hashtags will help your posts get found, which means extending your brand’s influence.
Try to use frequently searched hashtags that aren’t so overwhelmingly used that your post will be lost. For example, everyone loves a good #tbt (throwback Thursday), but because of the number of posts using that hashtag, you’ll have a lot of competition for visibility. You’ll need to do your homework to figure out the hashtags that work best for your brand.
Marketing a branded hashtag can also help drive traffic straight to your brand and create brand awareness. Of course, this requires quite a bit of work to get people searching for and using your specific hashtag.