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Onion for Scars


Onion is a root vegetable that has been grown worldwide for thousands of years primarily as a food source. More recently, onion has garnered attention for medicinal purposes, with advocates claiming that onions can prevent cancer, cure the common cold, and help with diabetes, osteoporosis, and other conditions.

Onion as a scar treatment


Onion extract is available in gel form, and may be applied topically 3-4 times a day. It is also the active ingredient in Mederma, a widely-used scar treatment sold over-the-counter.

Why It Works

Onion extract is thought to be an anti-inflammatory, and has been shown to inhibit the overproduction of collagen in scar tissue. This could help minimize the appearance of many types of scars, including those from stretch marks, burns and acne.


Research is inconclusive on the effectiveness of onion extract on the prevention of scarring. In more than one study, petroleum jelly has been shown to be at least as effective as onion extract, and is a less costly alternative. Do not use onion extract if you have an allergy to onions.

More Remedies


This information is solely for informational and educational purposes only. The publication of this information does not constitute the practice of medicine, and this information does not replace the advice of your physician or other health care provider. Neither the owners or employees of or the author(s) of site content take responsibility for any possible consequences from any treatment, procedure, exercise, dietary modification, action or application of medication which results from reading this site. Be aware that many of the techniques and remedies published on this site have not been evaluated in scientific studies. Often, only limited information is available about their safety and effectiveness. Use of these remedies in connection with other medications can cause severe adverse reactions. It is always best to speak with your primary health care provider before engaging in any form of self treatment. Additional information contained in our Legal Statement

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