One study found that:
- Undiluted ACV showed strong antimicrobial effects.
- At a 25% dilution, it was less effective against Candida yeast than against bacteria.
- Not all microorganisms reacted to ACV the same way.
So, the strength of the mixture — and the type of microbe — matters.
Overall takeaway? ACV is promising, but far from proven. Researchers still need to examine its risks and benefits more deeply.
How People Use ACV on the Scalp (Based on Personal Reports)
Even without solid scientific backing, many people still give ACV a try. A common method includes:
- Dilution: Mix two parts ACV with one part water.
- Application: Spread the diluted mixture onto the scalp.
- Wait: Leave it on for 15 minutes.
- Rinse: Pour the mixture through hair, then rinse with warm water.
- Frequency: Often used twice a week.
- Safety first: Avoid the eyes — and stop if you feel burning, itching, or notice skin changes.
These tips come from user reports, not medical guidelines.
Important Precautions
Before using ACV on any part of your skin or scalp, talk to a doctor, especially if you have allergies, sensitive skin, or an existing condition. Natural products can still cause irritation, and over-acidity can damage skin barriers.
If anything feels off — stinging, discoloration, itching — stop immediately.
Natural remedies can be exciting, but understanding the science behind them (and knowing what we don’t know yet) is the smartest way to stay safe.
Have you ever tried ACV for skin or scalp care? Drop your experience or questions below — your story might help someone else!