Influencers can come from many fields, not just celebrities. They gain large followings on social media and blogs by posting about specific topics like fashion, beauty, or art. Influencers communicate through written posts and visual content like photos. To find an influencer to work with, search online for someone with a large following who posts about topics related to your business. Approach them respectfully to review products free of charge, then develop an ongoing relationship if initial reviews are positive.