We use apple cider vinegar, which is made by fermenting apples. It contains acetic acid that helps lower the pH level of the hair and scalp, which can keep your scalp in balance and your hair cuticles smooth, reducing frizz and dryness. Due to its antimicrobial properties, apple cider vinegar may help control bacteria and fungi that can lead to scalp issues like itching and dandruff. ACV has long been used as a natural clarifying ingredient to get rid of buildup and excess oils.