Apple cider vinegar (ACV) has long been a favorite in natural beauty routines, often praised as a simple home remedy for dandruff. While scientific studies haven’t yet provided strong evidence of its effectiveness, countless people share stories of how ACV helped calm their scalp. The belief is that it can help balance the scalp’s pH, reduce buildup, and create an environment less welcoming to dandruff-causing microbes.

Some research suggests ACV may also relieve dryness, which is sometimes confused with dandruff. A 2022 review noted its potential to ease a dry scalp, though the causes of dryness and dandruff aren’t the same. Because of this, experts caution that ACV may not work for everyone, and more studies are needed to confirm whether it truly makes a lasting difference.

What we do know is that ACV has natural antifungal and antibacterial properties. These can help reduce certain bacteria, such as Staphylococcus, and may even target mild fungal growth. Still, its effectiveness varies—showing more promise against some bacteria than against fungi like Candida, especially at the concentrations usually used at home.

If you’d like to give ACV a try, dilute it first: mix two parts ACV with one part water, apply it to the scalp, leave it for about 15 minutes, then rinse well. Doing this once or twice a week may be enough. Always patch test to check for irritation, and consult a healthcare professional before starting, especially if you already have scalp issues.