Look at the big brands. Do their social network accounts sell 24/7? No. Otherwise, it wouldn’t make sense for users to subscribe to most of them.
But they keep reminding you about themselves: they post useful information, organize contests, contact subscribers, hike, or just fool around.
All of that to increase customer loyalty or generate interest.
Since social networks are not only text but also images, it is impossible not to use them. Branded photos and images are the right things to do when it comes to increasing brand awareness on the web.
Have you seen the brand LARQ on Instagram? It’s a very good example of qualitative and beautiful visuality.
Just look over their feed… The brand can be associated just with good visual content and loyalty that it is trusted by others.
In general, such information & images are much more effective in increasing recognisability. They are willingly saved and shared/re-posted. Branding images in posts and articles is also a common practice.