There is no clear evidence that apple cider vinegar causes hair loss. In fact, some people believe that apple cider vinegar can help improve hair health by rebalancing hair and scalp pH levels, smoothing hair cuticles, treating dandruff and itchy, dry scalps, and adding natural body to hair. However, it is important to note that there is little scientific support for these claims, and more research is needed to determine the true effects of apple cider vinegar on hair health. Some hair care products contain apple cider vinegar as an ingredient, such as dpHUEs ACV Daily Scalp Serum, which is designed to help keep the scalps pH balanced, exfoliate hair follicles, and create an optimal environment for healthy hair growth. It is always a good idea to consult with a healthcare professional or a licensed cosmetologist before trying any new hair care products or treatments.