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What is Galactomyces Ferment Filtrate?

What is Galactomyces Ferment Filtrate

Korean skincare is popular nowadays. You have probably heard of the intensive skincare regimens a lot of Koreans do daily. 

With the growing fanbase of K-Pop and K-dramas, seeing youthful and almost glass-like complexions of your favorite stars make you wish you had skin like theirs too!

But it’s not just their hard work that pays off. Ingredients of skincare products are vital to this too!

“Galactomyces Ferment Filtrate” is a common ingredient found in most Korean skincare products.

But what is Galactomyces Ferment Filtrate?

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What is Galactomyces Ferment Filtrate?

At first glance, this ingredient might sound intimidating. It is quite a mouthful to pronounce after all. 

It sounds like something you would find in food, rather than in skin care. Well, in fact, it is too. 

Let us break it down for you:

Galactomyces is a genus of fungi in the family Dipodascaceae.

We know what you’re thinking, “Why would I apply mold (fungus) on my face? That’s gross!”

Well, think about it. There’s mold in a lot of food and beverages we take in too. 

Galactomyces Ferment Filtrate Broken Down:

Ferment is the product of fermented yeast.

  • During the fermentation process, they are placed inside bioreactors, or fermentation units.
  • Then with food, and the right environment for them to grow and multiply.

When these microorganisms grow, they excrete nutrient-dense substances beneficial for the skin.

The byproducts have moisturizing and antioxidant effects that can be useful for your skincare routine.

Filtrate is the liquid left after filtration.

  • Once the fermentation process finishes, the yeast and other unwanted materials are filtered out.
  • Only the good stuff remains and goes in skin care production.

These processes leave us with the Galactomyces Ferment Filtrate used in skincare products!

History of Galactomyces Ferment Filtrate


In fact, Galactomyces Ferment Filtrate, or GFF, was actually discovered by accident at a sake (Japanese rice wine) brewery in the 1970’s. 

They noticed how the sake brewers had flawless and wrinkle-free hands despite their faces looking aged and worn out from work.

They did further research and soon birthed the ingredient in a lot of anti-aging formulas. 

Apart from Korean and Japanese skin care products, you find GFF in soy sauce, rice vinegar, miso, and wines too!

Benefits of Galactomyces Ferment Filtrate (GFF)


Judging on the results of studies and surveys, we know that GFF is heaven sent to the cosmetic industry

  • It’s rich in vitamins, skin amino acids, minerals and organic acids that help to protect the skin against damage.
  • They also found antioxidant effects and an increase in hyaluronan production in epidermal cells. 

More hyaluronic acid in the skin means more hydrated, plumper, and healthier skin.

GFF is effective in shrinking pore size, moisturizing, brightening, and balancing uneven skin tone. 

This allows you to have that glass-like, vibrant looking complexion you desire!

  • This skincare ingredient also works in controlling sebum production, decreasing acne, and reducing blackheads.
  • Apart from that, it is a potent anti-aging ingredient. It increases elasticity, nourishes your moisture barrier and revitalizes facial skin. 

Is Galactomyces Ferment Filtrate Safe for Sensitive Skin?

As mentioned, GFF has many benefits. Its moisturizing properties are great if you have dry and tired skin. Overall, GFF is a safe ingredient to use. 

However, there have been a few user complaints of irritation, especially for sensitive skin.

Malasesszia folliculitis or fungal acne is caused by yeast instead of bacteria. It is present as small flesh to red-colored bumps on the skin.

Take note that Galactomyces is a fungus. So people who suffer from fungal acne and closed comedones cannot use products containing Galactomyces as it will make their acne worse.

Some people find that products containing Galactomyces irritate their skin, make it red and bumpy. 

You won’t immediately know how your skin will react to skincare products unless you give it a try. 

It is strongly advisable to apply a new product in small quantities to a small part of your face. Test out the waters first!

Studies on Galactomyces Ferment Filtrate

The Asian Journal of Beauty and Cosmetology had a study submitted in 2014. 

The study evaluated the effects of essence-formed cosmetic ingredients containing the Galactomyces ferment filtrate on human skin improvements.

Afterwards, they conducted tests to check keratinization, pores, sebum excretion, brightness, and acne. 

They studied twenty subjects. Each result was determined by using the essence containing 97% of Galactomyces ferment filtrate on their faces three times a day. 

The results? 

  • Many of the enlarged pores and blackheads on the volunteer’s faces were significantly reduced by more than 15.66% and 21.84% respectively by using the essence. This was compared to the number of enlarged and clogged pores on the untreated control faces.
  • The amount of sebum and keratin in faces were meaningfully reduced by 64.17% and 16.47%, respectively.
  • They further demonstrated that the levels of skin brightness were improved after treatment of the reagent by 2.49%.
  • Moreover, acne was reduced by 9.59%.

The volunteers were highly satisfied with these results. This shows that GFF in essence-formed cosmetics has a highly improved effect on facial skin. 

Our Recommendations on Skin Care Containing Galactomyces Ferment Filtrate

Galactomyces Ferment Filtrate is usually found in essences and toners. 

Here are some GFF products we recommend you add on your skincare routine:

iUNIK Rose Galactomyces Essential Toner

Iunik rose

This toner by iUNIK is fairly popular for its watery, moisturizing formula. 

The 10% Galactomyces Ferment Filtrate is infused with 70% Rosa Damascena Flower Water. They work together to soothe and hydrate the skin.

This is safe enough for those with sensitive skin. It can even control oil and sebum production on your face. 

Other users say that it also helps with their fine lines.

Some By Mi Galactomyces Pure Vitamin C Glow Toner

Some By Mi

The two star ingredients of this toner are 88% Galactomyces Ferment Filtrate and 10,000ppm Vitamin C. 

Not only does it moisturize your skin, but it also brightens up your entire complexion.

People who’ve used this say that it also has a soothing effect on their face. 

The added Niacinamide and Adenosine also have strong anti-aging properties.

SK-II Facial Treatment Essence


The SK-II Essence is one of  the more expensive options. 

But many who have used it claim it is worth your money! It provides long lasting hydration and color-correcting coverage. 

It’s Aqua BB illuminates and protects the skin with lightweight coverage.

COSRX Galactomyces 95 Tone Balancing Essence


Galactomyces 95 Tone Balancing Essence is enriched with more than 95 percent Galactomyces. 

This is one refreshing essence that moisturizes the skin, and supports skin renewal. You’ll be looking vibrant as ever!

Elizavecca Galactomyces Pure Ample


Perfect at solving dry skin problems. It makes skin look lively and moist all day long! 

It improves skin tone and the ingredients that are produced during the fermentation provide exfoliating skin care.

Manyo Factory Galactomy Niacin Essence

Manyo Factory

This essence contains 97% Galactomyces Ferment Filtrate. Gives nutrition to skin and has great oil and moisture control. 

It helps improve pores, skin texture, moisturizes, brightens and tone skin tone. It is also used widely for skin whitening.



We’re grateful for all the skin care products made available in the market. 

The Korean and Japanese ones are definitely a crowd favorite because of their unique formulas!

GFF in the formulations has given a lot of effective skin care benefits. That’s probably why they’re gaining so much popularity by the day. 

Time to revamp your skincare routine and add some of these to protect your skin’s moisture barrier!

For a word of caution, when trying out new products, make sure to test them in small quantities. Make sure you are not prone to fungal acne.

Once you get a hang of it and find one that suits you, then you’re on the right track to getting that flawless skin you desire!


August 23, 2021 – Updated article formatting and content

July 21, 2021 – Reviewed and updated article links

Paola Diaz
Paola Diaz

Hi, I'm Paola! A skin care enthusiast and nature lover. Creating content that promotes proper skin treatment and keeping a healthy glow is my way of sharing with the world how healthy skin can go a long way. I’m a firm believer of natural beauty that radiates inside all of us. All we need is the right kind of nourishment that inspires our wellness from inside out. So it’s really not about physical beauty alone – it’s the beautiful life we can create for ourselves when we connect with our own nature and see there is beauty that shines from every one of us.