COSRX Low pH Goodnight Soft Peeling Gel Ingredients Explained

Last updated on July 18, 2023. Submitted by CrystalC_420.

Overview

What it is

Face cleanser with 25 ingredients that contains hyaluronic acid, niacinamide and PHA

Cool Features

It is vegan, cruelty-free, fungal acne (malassezia) safe, and reef safe

Suited For

It has ingredients that are good for fighting acne, anti aging, dry skin, brightening skin, oily skin, reducing pores, scar healing, dark spots and better texture

Free From

It doesn't contain any harsh alcohols, common allergens, fragrances, oils, parabens, silicones or sulfates

Fun facts

COSRX is from South Korea. This product is used in 210 routines created by our community.

We independently verify ingredients and our claims are backed by peer-reviewed research. Does this product need an update? Let us know.

You should know

Here's our breakdown of the notable ingredients, benefits, and concerns we determined from the ingredients in this product. Click any item to learn more.

Notable Ingredients

PHA
Niacinamide
Hyaluronic Acid (3)

Benefits

Hydrating
Good For Oily Skin
Redness Reducing
Skin Texture
Reduces Large Pores
Anti-Aging
Dark Spots
Scar Healing
Acne Fighting
Brightening (3)

Concerns

Irritating

Ingredient Info

Click any item below to learn more and view relevant ingredients.
alcohol-free
silicon-free
fragrance-free
sulfate-free
paraben-free
oil-free
fungal-acne safe
reef-safe
eu-allergen-free
vegan
cruelty-free
ph level
6.1

Ingredients Overview

Here's our quick-to-read summary of the ingredients in this product. Keep scrolling if you'd like to learn more about what each ingredient does!
Ingredient
Features
1
Skin Conditioning, Solvent
2
Absorbent
3
Humectant, Skin Conditioning, Skin Protecting, Solvent
0 / 0
Helps hydrate Dry Skin IconHelps brighten skin Icon
4
Masking, Skin Conditioning, Skin Protecting
5
Solvent
6
Humectant, Masking, Skin Conditioning, Solvent
1 / 0
7
Skin Conditioning, Solvent
8
Emulsion Stabilising
9
Antioxidant
Antioxidant Icon
10
Skin Conditioning
11
Buffering, Masking
12
Smoothing
Niacinamide IconGood for Oily Skin IconHelps reduce Skin Redness IconGood for Minimizing Pores IconGood for Dark Spots IconHelps fight Acne IconHelps brighten skin Icon
13
Absorbent, Emulsion Stabilising, Skin Conditioning
14
Skin Conditioning
15
16
Skin Conditioning, Solvent
17
Buffering
PHA Icon
18
Skin Conditioning
0 / 0
19
Humectant, Moisturising, Skin Conditioning
Hyaluronic Acid IconMay cause irritation IconGood for Skin Texture IconHelps with Anti-Aging IconGood for Scar Healing IconHelps brighten skin Icon
20
Humectant, Skin Conditioning
Hyaluronic Acid Icon
21
Skin Conditioning
22
Humectant, Skin Conditioning
0 / 0
Hyaluronic Acid Icon
23
Antioxidant, Preservative
Antioxidant IconPreservative Icon
24
Skin Conditioning
25
Emollient, Skin Conditioning

Ingredients Explained

This product contains 25 ingredients. Click on any ingredient to learn more about it
1
What it does: Skin Conditioning, Solvent
Community Rating: Loved

Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.

So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.

You'll also recognize water as that liquid we all need to stay alive. Talk about multi-purpose! If you see this, drink a glass of water. Stay hydrated!

Learn more about Water
2
What it does: Absorbent
Community Rating: Loved

Cellulose is the main component of plant cell walls. It is used as an emulsifier, absorbent, and texture enhancer.

This ingredient has many functions:

Fun fact: Cellulose is the most abundant form of organic polymer on Earth.

Learn more about Cellulose
3
What it does: Humectant, Skin Conditioning, Skin Protecting, Solvent
Community Rating: Loved

Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.

A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.

As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.

Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.

Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.

In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.

This ingredient is organic, colorless, odorless, and non-toxic.

Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.

Learn more about Glycerin
4
What it does: Masking, Skin Conditioning, Skin Protecting
Community Rating: Liked

Rosa Damascena Flower Water comes from the Damask rose. It is a dilluted version of the Rose Essential oil.

The Damask Roses' petals have been found to help sooth skin. The petals also contain antioxidant compounds.

Antioxidants help fight free-radical molecules. Free-radical molecules are capable of damaging our cells and other genetic material. Antioxidants help stabilize free-radicals by donating extra electrons. This may help reduce the signs of aging.

The fragrance of Rosa Damascena Flower Water may be used for masking. Masking ingredients are used to obscure or block properties of other ingredients. They are commonly used to block the scent of a product.

Learn more about Rosa Damascena Flower Water
5
What it does: Solvent
Community Rating: Liked

Propanediol helps absorb ingredients into your skin, boosting their benefits. It can act as an emollient, making your skin softer. Propanediol can help products last longer by boosting the properties of preservatives within the formulation.

Propanediol is not likely to cause sensitivity and considered safe to use.

It is derived from corn or petroleum with a clear color and no scent.

Learn more about Propanediol
6
What it does: Humectant, Masking, Skin Conditioning, Solvent
Community Rating: Mixed

Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:

  • It is a solvent, meaning that it helps to dissolve other ingredients. This also enhances the absorption of the product into one's skin.
  • It is a humectant, which means that it helps attract moisture into the skin.
  • It helps improve product application.

Overall, Butylene Glycol is a safe and well-rounded ingredient. It is unlikely to irritate skin, and works well with pretty much all other ingredients.

7
What it does: Skin Conditioning, Solvent
Community Rating: Mixed

1,2-Hexanediol is a multi-tasker ingredient. It acts as a preservative to increase shelf-life and can aid other preservatives in preventing microbe growth. 1,2-Hexanediol also helps the skin retain moisture as a humectant.

In products that are water-based, this ingredient can help stabilize perfumes and fragrances. It can also help make the texture of products softer and more smooth.

8
What it does: Emulsion Stabilising
Community Rating: Disliked

Acrylates/C10-30 Alkyl Acrylate Crosspolymer is a synthetic polymer. It is used to thicken and improve the texture of products.

Acrylates/C10-30 Alkyl Acrylate Crosspolymer is also an emulsifier. Due to its properties, it can prevent water and oil ingredients from separating.

9
What it does: Antioxidant
Community Rating: Liked

Hydroxyacetophenone is antioxidant and helps with skin conditioning.

Antioxidants help fight off free-radical molecules. These unstable molecules may damage your skin cells. By helping stabilize free-radicals, antioxidants may help in anti-aging.

Hydroxyacetophenone boosts the efficiency of other preservatives.

Learn more about Hydroxyacetophenone
10
What it does: Skin Conditioning
Community Rating: Disliked

Lavandula Angustifolia Flower Water is created by distilling parts of the lavender plant.

This lavender is known as the English Lavender and famous for creating purple fields in Provence, France.

Lavandula Angustifolia has anti-inflammatory properties due to its prostanoids and histamine content. Lavender also contains flavonoids and phenolic acids (such as ferulic acid), potent antioxidants.

Lavender flower water may have a scent. It may contain linalool, a known allergen.

Learn more about Lavandula Angustifolia Flower Water
11
What it does: Buffering, Masking
Community Rating: Liked

Tromethamine is an aliphatic compound. An aliphatic compound is an organic compound with open-chained carbon atoms. It is synthetically created. Tromethamine is used to balance pH and improve texture.

As an emulsifier, Tromethamine prevents oil and water ingredients from separating. This helps stabilize the product and elongate a product's shelf life. Tromethamine also makes a product thicker.

Tromethamine helps balance the pH level of a product. Normal pH level of skin is slightly acidic (~4.75-5.5). The acidity of our skin is maintained by our glands and skin biome. Being slightly acidic allows our skin to create an "acid mantle". This acid mantle is a thin barrier that protects our skin from bacteria and contaminants.

Oral Tromethanmine is an anti-inflammatory drug but plays the role of masking, adding fragrance, and/or balancing pH in skincare.

1,3-Propanediol, 2-amino-2-(hydroxymethyl)-

Learn more about Tromethamine
12
What it does: Smoothing
Community Rating: Loved

Niacinamide has emerged as an all-star ingredient due to its many benefits.

It is known to treat acne by reducing inflammation. It also helps fade dark-spots and strengthen the skin by promoting the growth of the ceramide barrier.

Other benefits include smoothing wrinkles and minimizing redness.

The cherry on top? Niacinamide can also help build keratin, a protein that keeps skin firm.

When incorporating niacinamide into your routine, look out for concentration amounts. Typically, 5% niacinamide provides benefits such as fading dark spots. However, if you have sensitive skin, it is better to begin with a smaller concentration.

Niacinamide can be mixed with other ingredients to boost benefits. For instance, it has shown to be effective when used with copper, folic acid, and zinc to treat acne.

Learn more about Niacinamide
13
What it does: Absorbent, Emulsion Stabilising, Skin Conditioning
Community Rating: Liked

Maltodextrin is a polysaccharide. It is derived from starch such as rice, corn, wheat, or potato starch.

In food, Maltodextrin is used to improve the texture and thicken a product. Due to its structure, it can help create a gel texture. As an emulsion stabilizer, it helps keep the ingredients in a product together.

As a polysaccharide, Maltodextrin has moisturizing properties. Polysaccharides are a type of carbohydrate. The top layer of skin uses polysaccharides to retain water, keeping the skin hydrated.

Maltodextrin is water soluble and has a sweet taste.

Learn more about Maltodextrin
14
What it does: Skin Conditioning
Community Rating: Mixed

Ethylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.

You might see Ethylhexylglycerin often paired with other preservatives such as phenoxyethanol. Ethylhexylglycerin has been found to increase the effectiveness of these other preservatives.

15
What it does:
Community Rating: Disliked

Disodium EDTA plays a role in making products more stable by aiding other preservatives.

It is a chelating agent, meaning it neutralizes metal ions that may be found in a product.

Disodium EDTA is a salt of edetic acid and is found to be safe in cosmetic ingredients.

Learn more about Disodium EDTA
16
What it does: Skin Conditioning, Solvent
Community Rating: Mixed

Pentylene glycol is typically used within a product to thicken it. It also adds a smooth, soft, and moisturizing feel to the product. It is naturally found in plants such as sugar beets.

The hydrophilic trait of Pentylene Glycol makes it a humectant. As a humectant, Pentylene Glycol helps draw moisture from the air to your skin. This can help keep your skin hydrated.

This property also makes Pentylene Glycol a great texture enhancer. It can help thicken or emulsify a product. Emulsifiers help stabilize a product. It does this by preventing certain ingredients from separating.

Pentylene Glycol also acts as a mild preservative and helps to keep a product microbe-free.

Some people may experience mild eye and skin irritation from Pentylene Glycol. We always recommend speaking with a professional about using this ingredient in your routine.

Pentylene Glycol has a low molecular weight and is part of the 1,2-glycol family.

Learn more about Pentylene Glycol
17
What it does: Buffering
Community Rating: Loved

Lactobionic Acid is a PHA. PHAs exfoliate the top layer of skin.

PHAs are more gentle than AHAs due to their larger structure. They do not penetrate as deeply as AHAs and take a longer time to dissolve dead cells. Studies show PHAs do not cause as much irritation.

By removing dead skin cells, PHAs leave the skin brighter and with even-texture.

PHAs also exhibit antioxidant activity by neutralizing free-radical molecules. This can help with anti-aging.

Learn more about Lactobionic Acid
18
What it does: Skin Conditioning
Community Rating: Liked

Papain is an enzyme found naturally in the papaya plant's leaves, fruit, and roots. It has antimicrobial, soothing, and wound healing properties.

Glycine and Vitamin A are naturally found in papain.

While papain is often touted as skin-lightening, further studies are needed to prove this. However, papain has been shown to help soothe acne-inflammation.

Papain belongs to a class of enzymes called proteolytic enzymes. These enzymes break down peptides and amino acids.

Some studies found papain to be a potential skin sensitizer and allergen. Those with latex allergies might also be allergic to papaya.

Learn more about Papain
19
What it does: Humectant, Moisturising, Skin Conditioning
Community Rating: Loved

Hyaluronic acid is naturally found in healthy skin. It is a humectant, meaning it draws moisture to your skin.

Hyaluronic Acid has the capacity to bind to large amounts of water. This ingredient helps hydrate, soothe, and protect the skin.

Fun fact: It is already naturally found in our bodies, such as the fluids of our eyes and our joints.

Studies find this ingredient to have anti-inflammatory and anti-microbial properties. This can help speed up wound-healing,

These are some other common types of Hyaluronic Acid:

Learn more about Hyaluronic Acid
20
What it does: Humectant, Skin Conditioning
Community Rating: Liked

Hydrolyzed Hyaluronic Acid is a form of hyaluronic acid. It is created by the hydrolysis of hyaluronic acid with a high molecular weight. Once created, Hydrolyzed Hyaluronic Acid has a low molecular weight.

Low molecular weight HA has been shown to hydrate and increase elasticity of the skin. Increasing elasticity is also associated with reduction of wrinkle depth.

One study found topical low molecular weight hyaluronic acid may be considered for the treatment of rosacea in the adult population. However, we always recommend speaking with a professional about your skin concerns.

Hyaluronic acids are a humectant. This means they draw moisture from the air. Hyaluronic acids help moisturize, soothe, and protect the skin.

Read more about other common forms of hyaluronic acid:

Learn more about Hydrolyzed Hyaluronic Acid
21
What it does: Skin Conditioning
Community Rating: Liked

This ingredient is created by fermenting soybean extract with the bacteria, lactobacillus.

Some studies have shown it to have antioxidant properties. One study found this ingredient to have stronger properties than non-fermented soybean extract.

Another study found in increase of isoflavones, amino acids, and peptides in fermented soy milk.

Learn more about Lactobacillus/Soybean Ferment Extract
22
What it does: Humectant, Skin Conditioning
Community Rating: Loved

Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.

Like hyaluronic acid, it is great at holding water and acts as a humectant. This makes it a great skin hydrating ingredient.

Sodium Hyaluronate is naturally occurring in our bodies and is mostly found in eye fluid and joints.

These are some other common types of Hyaluronic Acid:

Learn more about Sodium Hyaluronate
23
What it does: Antioxidant, Preservative
Community Rating: Mixed

Sodium Metabisulfite is an antioxidant and is a preservative.

24
What it does: Skin Conditioning
Community Rating: Liked

We don't have a description for Lactobacillus/Rice Ferment.

25
What it does: Emollient, Skin Conditioning
Community Rating: Liked

Camellia Japonica Flower Extract comes from the Japanese Camellia plant. This plant is native to East Asia and known as "Tsubaki" in Japanese.

Tsubaki flowers possess antioxidant and soothing properties. This flower has shown to be effective at fighting pollution damage by protecting your skin's fibroblasts. Your skin's fibroblasts help create collagen and collagen is responsible for youthful, plump skin.

This flower also contains many antioxidant enzymes. Antioxidants help fight free-radical molecules. Free-radical molecules are capable of damaging our cells and other genetic material. They may originate from sunlight, air pollution, or cigarette smoke. These free-radical molecules are unstable and are often looking for missing electrons. This instability causes free-radicals to damage our cells. Antioxidants help stabilize free-radicals by donating extra electrons.

Thus, Camellia Japonica Flower Extract may help reduce the signs of aging.

Learn more about Camellia Japonica Flower Extract
Embed Ingredients

Here's what our community thinks of the 25 ingredients in this product ✨

68% are loved or liked
20% have mixed ratings
12% are disliked or very disliked
0% have no rating yet

When to use

We've created a guide with info on when you should use COSRX Low pH Goodnight Soft Peeling Gel. We've also included some recommended products to use it with, as well as some routine inspiration!

Read our guide on when to use Low pH Goodnight Soft Peeling Gel ->
Verified by SkinSort

We're dedicated to providing you with the most up-to-date and science-backed ingredient info out there.

The data we've presented on this page has been verified by a member of the SkinSort Team.

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Top Reviews

View all 5
princessmelody2010's Avatar'
Jan 1, 2024

If you're struggling with any types of acne and pimples, use this! This works so well with my combo skin! I swear, this product gave me that hydrated skin.

If you're struggling with any types of acne and pimples, use this! This works so well with my combo skin! I swear, this product gave me that hydrated skin.

Great Value
Hydrating
Absorbs Well
Light Scent
Works Well

Latest Reviews

View all 5
tttende's Avatar'
Jul 3, 2023

10/10
Love it, will repurchase. Despite its name, I use it in the morning. Leaves my skin feeling fresh without irritation (you don't need much product). Has no smell.

I was aware of their 'Good Morning' cleanser which seemed a...

10/10
Love it, will repurchase. Despite its name, I use it in the morning. Leaves my skin feeling fresh without irritation (you don't need much product). Has no smell.

I was aware of their 'Good Morning' cleanser which seemed a little bit stripping for my sensitive skin based on their ingredient list, so I decided to try this Pha version instead. And I'm so glad I did! It helps me gently exfoliate on a daily basis without stripping my face, as my pores tend to clog.

✦ Price: Pretty reasonable for me considering that I use this product every two days plus I always buy it on sale
✦ Lasts about 5 months

Read more reviews ->

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