Skin

Kojic Acid - What It Serves, Before and After, Concentration, Handling and Tips

The spots on the skin, especially those on the face, can cause many disorders to the well-being of people, creating psychological problems as well as relationships.

These spots may be associated with excess skin pigmentation, which is characterized by increased melanin and other substances involved in pigmentation. Stains can be caused by hereditary problems, by excessive sun, allergies or even by premature aging.

Kojic acid is one of the products used to treat this problem today. Let's get to know more about what kojic acid is and what kojic acid is for, more information about the best concentration of this product, know where to buy and how to get the product handled for use in home.

What is kojic acid?

It is possible to verify that our body has small differences of staining in several parts of natural form. These differences are related to the thickness of the skin, the presence of superficial blood vessels may alter the coloration of the same, in addition to the presence of pigments such as carotenoids, which affect the perception of color.

The amount of melanin that is produced by melanocytes is one of the determinants of coloration. These cells are specialized in the pigmentation of the epidermis, being responsible for the production of melanin and its distribution and having fundamental importance in skin pigmentation.

Due to the increase in skin problems, there was also a considerable increase in development of bleaching products that could, in particular, promote the reduction of melanin production in the melanocytes.

One of the products currently used is kojic acid, which is produced by a Japanese mushroom called Koji and which is also used in the fermentation of rice, having several benefits and applications. This acid was first isolated in 1907 and its chemical structure was only described in the mid-1920s.

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Kojic acid is considered a powerful natural depigmentant that acts to inhibit the production of tyrosinase, an enzyme that is essential for the production of melanin, considerably reducing the in the skin. In addition to its stain-reducing effect, kojic acid also acts as an antiseptic, preventing the proliferation of fungi and bacteria in the epidermis, and possessing antioxidant action, acting in a way to prevent aging precocious.

Kojic acid acts by inhibiting the action of the enzyme tyrosinase, which acts as an ion chelator, thus promoting the decrease of melanin formation. The effect of this acid will occur after two to four weeks of continuous use, presenting significant results before and after, and may vary according to the type of skin, as in cases of people with very oily or very thick.

This acid is considered to be fairly safe to use, being less irritating and milder than other products sold on the market.

What is kojic acid for?

Kojic acid is widely used in skin treatments because of its various benefits, as it is less irritating than other substances. It can be used during the day as it does not cause photosensitization in the patient, which means that this product can be used without restrictions of time or place.

In addition, this acid does not oxidize, and can be associated with other depigmenting agents such as glycolic acid, which is one of the most commonly used dermatological products today.

The main use of kojic acid is related to the treatment of blemishes on the skin, reducing the signs of premature aging and also scars caused by wounds, acne and pimples. However, in addition to being widely used as a skin lightener, this acid also has antimicrobial properties, helping to combat some bacteria that can be harmful to the body.

This acid is also considered an excellent antifungal, helping in the treatment of skin infections caused by fungi. It may be useful in the treatment of diseases such as candidiasis, mycosis, athlete's foot, among others. Some hygiene products, such as soaps, can contain this acid in its composition, acting in a way to prevent the proliferation of fungi and bacteria.

How to use kojic acid?

Kojic acid has quite significant effects after its use, with minimal treatment after two weeks. A study of 80 patients with moderate facial hyperchromia showed significant improvement results compared to a 4% concentration hydroquinone preparation. A solution containing kojic acid, emulsion extract and glycolic acid was tested in comparison to another group using hydroquinone.

This acid is an excellent option for those who need to perform a facial whitening and can be applied with a lower concentration, around 05%, or with a higher concentration of up to 4%. It can be handled, and is widely used in the composition of various products such as creams, nonionic lotions, bleaching aqueous lotions, cream gels, among many other products.

The treatment with this acid should be done continuously, for up to six months, and may vary according to the type of problem and according to the medical recommendation.

Due to its characteristics, this acid can be used as a substitute for hydroquinone, being more efficient when associated with other assets. The manipulated product can be made in different concentrations, depending on the type of skin, and can also be found with other substances together, as is the case with the vitamin C, which is an antioxidant and also aids in cell regeneration with glycolic acid, which is widely used for reducing marks and blemishes on skin treatments, or with other products.

Although the treatment with this active is not very fast in relation to other substances, it is the most indicated, mainly due to the price. It is possible to buy the product in powder form with light brown coloration, being soluble in water and in ethanol, and should be kept in airtight containers or in places without heat, light or humidity. It can also be found in the composition of products in cream gel, lotions, among others.

The price of these products can vary widely according to the brand, with values ​​between R $ 3, 0 and R $ 9, 0.

What are the side effects of kojic acid?

Although there are no reports of side effects with the use of this product, in some cases problems of irritation and allergic contact dermatitis may occur.

When used at very high concentrations over an extended period of time, this can leave the skin very sensitive and susceptible to sunburn. Therefore, protect your face and skin with clothing and use sunscreens. If the patient has any side effects with the use of this acid, you should immediately stop the treatment and seek a responsible doctor to verify the occurrence.

Pregnant and breastfeeding women should not use this substance without the advice of a physician.

Before and after

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Conclusion

Kojic acid is one of the most commonly used products for face facials. This acid is a product obtained through the fermentation of rice and is considered a powerful natural depigmentant, acting in a to inhibit the production of tyrosinase, an enzyme that is critical for melanin production, considerably reducing staining.

The action of this acid will occur after two to four weeks of continuous use, presenting expressive results and may vary according to the type of skin. This acid is considered to be fairly safe to use, being less irritating and milder than other products on the market.

Additional references:

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  • https://pubs.acs.org/doi/10.1021/acs.biomac.6b01353
  • https://www.ncbi.nlm.nih.gov/pubmed/23353126
  • https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3509554/
  • https://ec.europa.eu/health/ph_risk/committees/04_sccp/docs/sccp_o_148.pdf
  • http://journals.sagepub.com/doi/10.1177/1091581810385956
  • https://www.ncbi.nlm.nih.gov/pubmed/7714722
  • http://www.ingentaconnect.com/content/aoac/jaoac/2015/00000098/00000001/art0000; sessionid = 245uefunebafd.x-ic-live-02

Have you ever heard of kojic acid and have you used any product that contains it? What were the results for your skin? Comment below!

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