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  • Active ingredient: Quercetin , Quercetin
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What is Onion Extract

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An Extract That Is Beneficial When Used Both Orally & Topically 

Onions have always been cost-effective and readily available, but apart from being a a food source, the extract from onions has also been used as a nutritional supplement. The flesh of an onion is broken down in order to form onion extract, and it can even be created at home. Certain skin lotions and medications, which are touted to help get rid of acne and scars, contain onion extract. There is also evidence that suggests that onion extract can prove to be potentially useful in the treatment of diabetes and high cholesterol.

Onion Extract benefits

In an answer to a question about embarrassing scars, Go Ask Alice claims that onion extracts exerts anti-inflammatory effects in the skin, reducing inflammation. So, it can reduce both the redness caused by a newly forming scar and can also reduce the size of the scar. The study “The effects of onion extract” also points out that discoloration and inflammation can be reduced by applying onion extract on a scar every day. Onion extract can even be used on the fact to treat acne scars.

An acne scar tends to have excess collagen fibers haphazardly arranged around it. This is the reason that acne scars tend to feel hardened and/or raised above the skin. Go Ask Alice’s answer also mentions that onion extract inhibits the production of collagen, so it can reduce the appearance of acne scars. It can also make the acne scars on the face less noticeable and it can even help treat keloid scars.

In “The DERMAdoctor Skinstruction Manual,” it is mentioned that some acne scars tend to be lower than the skin and are shaped like a saucer. The book recommends the use of Mederma Mederma, an over-the-counter onion extract cream, which encourages collagen to grow in a more controlled manner, causing the skin to become very elastic and resilient, while improving those acne scars.

The recent animal-based study referred to in the article “Onion extract may improve high blood sugar and cholesterol” suggests that onion extract can prove to be a potentially promising treatment for high cholesterol and blood sugar. The study, which involved diabetic rats, revealed extract from onion bulbs resulted in a significant decline in fasting blood sugar levels between 50% and 35%, based on the dose. The total cholesterol level in those rats was also lowered. While the results are apparently, the mechanism that enables onion extract to produce this effect has yet to be explained.

Onion Extract Dosage

Over-the-counter creams and lotions containing onion extract should be used as specified by the manufacturer. In the study mentioned in the article “Onion extract may improve high blood sugar and cholesterol,” varying doses of onion extract ranging between 200 milligrams and 600 milligrams per kilograms of body weight were used every day. However, only the 400 mg/kg/day and the 600 mg/kg/day doses resulted in the positive effects of lowering blood sugar and cholesterol levels.

Onion Extract Side Effects

It is somewhat of a well-known fact that onion seeds happen to be occupational allergens, but there have been no reports of allergic reactions from the use of onion extract, whether orally or topically.


Before applying homemade onion extract to your skin, make sure you consult with your dermatologist.


  1. Go Ask Alice! Embarrassing scars – how can I get rid of them? 
  2. J Wound Care: The effects of onion extract on hypertrophic and keloid scars. 
  3. Simon and Schuster: The DERMAdoctor Skinstruction Manual: The Smart Guide to Healthy, Beautiful Skin and Looking Good at Any Age. 
  4. ScienceDaily: Onion extract may improve high blood sugar and cholesterol. 

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