Look at that. That's great progress. You did a great job on the neckline. I also had a bit of issues with itch and dandruff at the chin and jaw around that time, but a good brushing, washing and the beard oil solved the issue in about two days. Maybe the brushing isn't for you - to irritating, maybe not, may depend on the brush.

Oh and btw. beards seem to keep you cooler in the summer as well - more surface for the sweat to evaporate, resulting in a cooler face.