Because eczema can be triggered by foreign substances, a doctor may suggest that you begin by applying ACV only to a small patch of your skin and waiting a few days to see whether you have an ...

However, it's important to dilute ACV with water before doing so to avoid irritation. Doing a patch test first can help ensure that you don't irritate a larger area of skin. Finally, OPSS says ...

as both rosemary water and apple cider vinegar can be potent when used undiluted. Additionally, it’s best to perform a patch ...