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Does Soy Sauce Darken Your Skin? Here Are The Facts

Does Soy Sauce Darken Your Skin? Here Are the Facts

The internet is full of rumors, urban legends, and conspiracy theories. Some are true, some are false, and some are too good to check. So, Does Soy Sauce Darken Your Skin?

No. The reason why it’s said that soy sauce darkens the skin is because of a belief in an old Chinese saying, which is “stewed tofu, white color; soy sauce tastes good, black color.” Well, it isn’t true. The soy sauce has no coloring material, so it can not cause the skin to be dyed or discolored.

So read on to learn more about the history of soy sauce. Does it really darken your skin? 

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Does Soy Sauce Darken Your Skin? ( in-depth explanation)

Soy sauce is a fermented food made in East Asia for hundreds of years. It is commonly used as a seasoning in cooking and as an ingredient in many other foods, such as marinades and dipping sauces. Soy sauce has a deep brown color that comes from adding fermented soybeans (naturally brown) and wheat flour to create a thick liquid with high levels of sodium.

Many people have been wondering whether or not it’s true that overeating soy sauce will make your skin darker than it usually would be—and this question even popped up on Quora! Well, there doesn’t seem to be any scientific basis for believing so–and while some people might think something called “soy face” sounds plausible, it still can’t be said with certainty that eating sweet soy sauce will cause the skin to darken at all–let alone change its color permanently!

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What does soy sauce do to your skin?

Soy sauce is a condiment made from fermented soybeans and wheat. It is a common ingredient in Asian cuisine, and the color of soy sauce generally ranges from brown to black.

Soy Sauce
Soy Sauce

Soy sauce contains an antioxidant called Kojic Acid, which has been proven effective for skin lightening. The most common way to use Kojic acid for skin whitening is with a topical cream or lotion.

Does soy sauce contribute to hyperpigmentation?

So, can soy sauce cause hyperpigmentation? The answer is no.

Although soy sauce contains natural melanin, and coffee also contains caffeine and theobromine (common treatments for skin discoloration), there is no scientific confirmation that ingesting this food or drinks can cause scars to darken or cause dark spots to grow. While they may positively affect your skin tone, it’s important to remember that these ingredients do not stimulate melanin production in the human body.

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Q1: Does soy reduce melanin?

A: No, soy does not reduce melanin. Melanin is a pigment that helps protect the skin from UV rays; hence, people with fair complexions tend to have more of this pigment in their skin. This is why people with dark complexions need sunscreens and people with fair complexions don’t.

Q2: Which food is not suitable for skin whitening?

A: Canned foods, dry products, and frozen foods can cause skin discoloration. Hence, if you’re planning to whiten your skin with natural remedies, avoiding canned and dry foods is better. Instead, choose fresh fruits, vegetables, and healthy, low-fat meals to prevent skin discoloration.


In short, soy sauce can mildly affect your skin’s appearance. However, many other factors contribute to hyperpigmentation and should be addressed first before you start worrying about soy sauce.

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