Apple cider vinegar has antibacterialTrusted Source, anti-inflammatory, and antifungal properties. It can help reduce itching caused by dry skin. Try diluting apple cider vinegar in warm water and using it as a rinse after shampooing to alleviate dandruff and an itchy scalp.
I’ve read about the use of ACV, it is also supposed to help keep the hairy shiny. Another option is massage some Black seed oil into your scalp before washing, massage in, and leave for 5 mins (or longer if you have the time) then wash out as usual.