Kojic acid - Benefits And How To Use It For Skin Lightening


Kojic Acid: Benefits And How To Use It For Skin Lightening
Kojic acid is a godsend for anyone who’s battling dark spots and dull skin. It is a wonder ingredient present in skin brightening creams and serums, and I will tell you why. Keep reading.

Table Of Contents

  • What Is Kojic Acid?
  • Uses Of Kojic Acid: How It Works
  • Kojic Acid: Is It Safe For Skin? What Are The Benefits?
  • Are There Any Side Effects Of Kojic Acid?
  • Things To Keep In Mind Before Using Kojic Acid
  • Kojic Acid Products You May Try

What Is Kojic Acid?

Kojic acid is an agent that is extracted from different types of fungi, especially the different strains of Aspergillus (a kind of fungus). It was first discovered in 1907 and was extracted from a strain of Aspergillus called Aspergillus oryzae grown on steamed rice.
The name kojic acid is taken from the Japanese term “koji,” meaning “steamed rice.” It is widely used in cosmetic and skin care products as a whitening and brightening agent (1). Let’s get to know more about it in detail.

Uses Of Kojic Acid: How It Works

Uses Of Kojic Acid How It Works
Kojic acid is a key ingredient in many skin brightening creams, gels, and serums. The Scientific Committees on Consumer Products (SCCP) approved using kojic acid in skin care products at a concentration of 1% or less (2).
You will come across soaps, cleanser, serums, creams, and lotions containing different concentrations of kojic acid. You need to use the product as per the instructions provided by the manufacturer. While you have to wash off soaps and cleansers immediately after application, you can leave serums, creams, and lotions on overnight for better absorption. Let’s now understand how kojic acid functions.
Kojic acid brightens your skin by inhibiting melanin production. Melanin is the pigment that colors your skin, eyes, and hair. Overproduction of melanin often gives you dark spots and uneven skin tone. Your body produces melanin with the help of an amino acid called tyrosine. Kojic acid inhibits the function of tyrosine, which, in turn, inhibits melanin production (3).
But, the question is, how safe is kojic acid for your skin?

Kojic Acid: Is It Safe For Skin? What Are The Benefits?

Kojic Acid Is It Safe For Skin What Are The Benefits
A study on six postmenopausal women tested the effect of kojic acid cream (containing 1% kojic acid). Their blood test revealed the presence of some amount of kojic acid in their plasma. However, the study suggested that since the absorption of kojic acid into the skin (and subsequently into the bloodstream) is prolonged, there isn’t any chance of adverse effects on humans (2).
Using products with kojic acid has several benefits.

1. It Reduces Hyperpigmentation

Excessive sun exposure may cause hyperpigmentation, dark spots, and freckles on your skin. Applying kojic acid on your face can help lighten the spots and patches, giving you clear skin. It is also said to have an overall whitening effect on your skin. It can treat melasma successfully without irritating your skin (3).

2. It Has Anti-Aging Effects

Now that sounds exciting! Kojic acid creams and products not only reverse sun damage but also reduce wrinkles and signs of aging. Kojic acid inhibits the action of tyrosinase, which is responsible for melanin production and the skin aging process (4).

3. It Has Antibacterial Properties

Although the antibacterial properties of kojic acid are not extraordinarily powerful, it is pretty effective against several strains of bacteria and can inhibit their growth even when used in small dilutions (2).

4. It Has Antifungal Properties

Kojic acid also has antifungal properties. It was found to have an inhibitory effect on certain strains of fungi and is extremely helpful in treating yeast infections, such as athlete’s foot or ringworm and candidiasis. Regular application of kojic acid on the skin helps prevent bacterial and fungal skin infections (5).
Although kojic acid is extremely safe for skin, few people may experience a few side effects.

Are There Any Side Effects Of Kojic Acid?

Are There Any Side Effects Of Kojic Acid
The most common side effects of kojic acid are:

1. It May Cause Contact Dermatitis

People with sensitive skin are prone to contact dermatitis. According to a review published by the American Contact Dermatitis Society, a patient developed contact dermatitis after using a cream containing kojic acid (6).

2. It Might Make Your Skin Sensitive To Sun Rays

Kojic acid inhibits the production of melanin, a pigment that is also responsible for saving your skin from sunburn and other side effects of harsh sun rays. When melanin production is compromised, your skin becomes susceptible to sunburn.
To avoid any side effects, it is always better to consult a dermatologist before using kojic acid. There are certain things that you should keep in mind while using kojic acid.

Things To Keep In Mind Before Using Kojic Acid

  • Kojic acid is helpful for people who have skin spots, hyperpigmentation, scars, and dark patches. People who suffer from any particular skin condition should avoid using kojic acid. Also, those suffering from allergies should consult a doctor before using it.
  • When using kojic acid products, always stick to the instructions provided by the manufacturer. If your doctor has prescribed any product, ask for usage directions and follow them.
  • If you notice any rash or changes in your skin after using kojic acid products, do not ignore it. Stop using it and visit the doctor immediately.
  • Never use kojic acid on broken skin.
The desired result may vary from person to person, depending on the skin type and the severity of the condition. Some may get results in a few weeks while a few others may take months to show results. Try to use kojic acid only for a brief period – until the condition is healed or you get the desired results.
Here’s a list of kojic acid products that are available online.

Kojic Acid Products You May Try

1. Marie France Original Kojic Acid Soap

1. Marie France Original Kojic Acid Soap
This soap is specially made for skin brightening. It is usually made in small batches to retain the efficacy of kojic acid. This is because kojic acid tends to oxidize quickly. This soap has high potency and should be used as per manufacturer instructions.
Buy it here!

2. Reviva Labs Professional Strength Brown Spot Night Creme

2. Reviva Labs Professional Strength Brown Spot Night Creme
This overnight cream claims to give faster results in reducing age spots, dark spots, and skin discoloration. It contains kojic acid with a refined vegetable oil base that blends quickly into your skin for better results.
Buy it here!

3. QRx Labs Whitening Serum

3. QRx Labs Whitening Serum
Apart from kojic acid, this whitening serum contains licorice extracts and Alpha Arbutin, which are also known for their brightening effect. This is a medical grade serum and contains 1% kojic acid and 2% Alpha Arbutin and therefore, has the maximum impact on the skin.
Buy it here!

4. Kojic Acid Powder

4. Kojic Acid Powder
You can use this powder with your creams, face packs, lotions, toners, and other skin care products. Just mix it and apply on the affected area. However, before using, check the usage instructions provided by the manufacturer.
Buy it here!

5. Kojie San Body Lightening Lotion

5. Kojie San Body Lightening Lotion
This body lotion brightens your skin tone gradually and makes it youthful. Apart from kojic acid, it is enriched with rosehip oil and vitamins A and C that keep your skin nourished and moisturized and protect it from UV rays.
Buy it here!
If you are struggling with stubborn spots, kojic acid can be your savior. However, if you are a first-time user, try using products infused with kojic acid instead of its raw form. Explore and try the kojic acid products listed in the article and let your skin glow.
And, of course, do not forget to share your feedback with us. If you have used kojic acid products, tell us which one worked for you. Drop a message in the comments section below.


  1. “Final Report of The Safety Assessment..” International Journal of Toxicology, Sage Publication
  2. “Opinion On Kojic Acid”, SCCP, Directorate-General for Health & Consumers, European Commission
  3. “The Comparative Study of Hydroquinone and Kojic Acid..”, Journal of Dental and Medical Sciences, IOSR Journals
  4. “Depigmenting Effect of Kojic Acid Esters..”, Journal of Biomedicine and Biotechnology, NCBI
  5. “Antimicrobial Activity of Kojic Acid..”, Asian Pacific Journal of Tropical Medicine
  6. “Allergic Contact Dermatitis..”, Dermatitis, Wolters Kluwer



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Daily InfoTech: Kojic acid - Benefits And How To Use It For Skin Lightening
Kojic acid - Benefits And How To Use It For Skin Lightening
Kojic acid - Benefits And How To Use It For Skin Lightening
Daily InfoTech
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