Updated on January 31, 2024
Overview
What they are
These products are both cruelty-free and reef safe . They have a total of 19 ingredients in common
Cool Features
They both contain hyaluronic acid
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, oily skin, reducing pores, scar healing and dark spots
Free From
They both do not contain any harsh alcohols, parabens or sulfates
What's Inside
They both contain oils and silicones
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.
Ingredient Info
COSRX The Retinol 0.3 Cream 51 ingredients
Numbuzin No.9 Secret Firming Serum 37 ingredients
- Glycine Soja Oil
- Cetearyl Alcohol
- Butyrospermum Parkii Butter
- Polyglyceryl-10 Stearate
- Helianthus Annuus Seed Oil
- Glyceryl Stearate
- Oryza Sativa Bran Wax
- Stearic Acid
- Polyglyceryl-3 Methylglucose Distearate
- Palmitic Acid
- Sorbitan Isostearate
- Elaeis Guineensis Oil
- Myristic Acid
- Lauric Acid
- Limnanthes Alba Seed Oil
At a glance
Click on any of the items below to learn more
COSRX The Retinol 0.3 Cream 51 ingredients
Numbuzin No.9 Secret Firming Serum 37 ingredients
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Concerns
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Ingredients Side-by-side
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.
Caprylic/Capric Triglyceride is an emollient, solvent, and texture enhancer. It is considered a skin-softener by helping the skin prevent moisture loss.
Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.
Not safe for Fungal Acne
Glycine Soja Oil comes from the soybean. Glycine Soja is native to eastern Asia.
Antioxidant 4 Benefits May cause irritation
Tocopherol (also known as Vitamin E) is a common antioxidant used to help protect the skin from free-radicals and strengthen the skin barrier. It's also fat soluble - this means our skin is great at absorbing it.
Antioxidant Helps brighten skin
Tocopheryl Acetate is AKA Vitamin E. It is an antioxidant and protects your skin from free radicals. Free radicals damage the skin by breaking down collagen.
3 Concerns
Cetearyl alcohol is a mixture of two fatty alcohols: cetyl alcohol and stearyl alcohol. It is mainly used as an emulsifier. Emulsifiers help prevent the separation of oils and products. Due to its composition, it can also be used to thicken a product or help create foam.
Trehalose is a disaccharide made of two glucose molecules (glucose is sugar!). Trehalose is used to help moisturize skin. It also has antioxidant properties.
Panthenol is a common ingredient that helps hydrate and soothe the skin. It can be found naturally in our skin and hair.
2 Concerns
Butyrospermum Parkii Butter is a plant lipid from the fruit of the Shea Tree. It is an effective skin hydrator and emollient.
Ammonium Acryloyldimethyltaurate/Vp Copolymer (let's call it AAVC for short) is a synthetically created polymer. It's used as a film-forming agent and used to thicken the consistency of products.
Dimethicone is a silicone used for making products smooth and silky. It also has the added benefit of sealing in hydration. The amount of dimethicone found in beauty products is considered safe and non-comedogenic, meaning it won't clog pores.
Polyglyceryl-10 Stearate is a skin conditioner with emollient and emulsifier properties.
Hydrogenated Lecithin is created from the hydrogenation of lecithin. Hydrogenation is a chemical reaction between molecule hydrogen and another element.
Helps hydrate Dry Skin 2 Concerns
Helianthus Annuus Seed Oil is the oil derived from the seeds of a Sunflower. Sunflower seed oil is non-fragrant. It is an emollient, meaning it helps to soften the skin.
This is a synthetic polymer. It helps improve the texture of products by adding thickness and gel-like feel.
Carbomer is a polymer of acrylic acid. Its main role is to create gel consistency within products.
8 Benefits 3 Concerns
Retinol is a gold-standard ingredient for anti-aging. It is a form of Vitamin A and belongs to the class of retinoids that also includes tretinoin.
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.
Glyceryl Stearate is a mix of glycerin and stearic acid.
Sodium Sulfite is a preservative. Preservatives help prevent mold and bacteria from growing in cosmetics.
Daucus Carota Sativa Root Extract comes from the root commonly known as carrot (the orange kind we eat!).
Allantoin plays a role in soothing and moisturizing the skin. Because of this, it is often added to products with strong active ingredients.
Glyceryl Caprylate comes from glycerin and caprylic acid, a fatty acid from coconut.
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.
Oryza Sativa Bran Wax is wax from the outer layer of a rice kernel. It is a byproduct of milling rice, or the operation to produce a whole grain rice product.
Stearic Acid is a fatty acid. It is an emollient, emulsifier, and texture enhancer.
Polyglyceryl-3 Methylglucose Distearate is created from the diester of stearic acid and the condensation product of methylglucose and Polyglycerin-3.
Palmitic Acid is a fatty acid found in our skin. In cosmetics, it is usually derived from palm oil. It is a cleanser, emollient, and emulsifier.
Ethylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.
Disodium EDTA plays a role in making products more stable by aiding other preservatives.
Adenosine is in every living organism. It is one of four components in nucleic acids that helps store our DNA.
Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.
Sorbitan Isostearate is an emulsifer and cleaning agent. It is created from isostearic acid and sorbitol.
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.
Not safe for Fungal Acne
Elaeis Guineensis Oil comes from the African Palm tree. This tree is native to Western and Southwestern Africa.
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.
Beta-Carotene is a carotenoid. It is an antioxidant that converts to Vitamin A. Antioxidants help fight free-radicals. Free-radicals are molecules that may damage your skin cells, such as pollution.
Sodium Hyaluronate Crosspolymer is a type of hyaluronic acid. In fact, it is modified version of hyaluronic acid.
Myristic Acid is a saturated fatty acid. It is naturally found in milk fat. Other sources include palm oil, coconut oil, and butter fat.
4 Benefits May cause irritation
Hyaluronic acid is naturally found in healthy skin. It is a humectant, meaning it draws moisture to your skin.
Lauric Acid is a fatty acid or lipid. About half of fatty acids in coconut oil is lauric acid.
Antioxidant 6 Benefits
Ascorbic Acid is is pure Vitamin C. This form makes up the largest amount of vitamin C found naturally in our skin.
Not safe for Fungal Acne
Limnanthes Alba Seed Oil is the oil extracted from the seeds of the meadowfoam plant. This oil is non-fragrant and is an emollient. As an emollient, meadowfoam seed oil helps soften and hydrate the skin.
5 Benefits
You might know this ingredient as Ethyl Ascorbic Acid, a more stable version of ascorbic acid.
Glutathione is an antioxidant naturally found in our bodies. It is made up of three amino acids: glycine, cysteine, and glutamic acid.
Water, Caprylic/Capric Triglyceride, Butylene Glycol, Glycerin, Glycine Soja Oil, Tocopherol, Tocopheryl Acetate, Cetearyl Alcohol, Trehalose, Panthenol, Butyrospermum Parkii Butter, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Dimethicone, Glyceryl Polymethacrylate, Polyglyceryl-10 Stearate, Hydrogenated Lecithin, Helianthus Annuus Seed Oil, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Carbomer, Retinol 0.3%, Tromethamine, Glyceryl Stearate, Polysilicone-11, Sodium Sulfite, Daucus Carota Sativa Root Extract, Allantoin, Glyceryl Caprylate, Propanediol, Oryza Sativa Bran Wax, Tocotrienols, Stearic Acid, Polyglyceryl-3 Methylglucose Distearate, Palmitic Acid, Ethylhexylglycerin, Disodium EDTA, Adenosine, Sodium Hyaluronate, Sorbitan Isostearate, 1,2-Hexanediol, Elaeis Guineensis Oil, Hydrolyzed Hyaluronic Acid, Beta-Carotene, Sodium Hyaluronate Crosspolymer, Myristic Acid, Hyaluronic Acid, Lauric Acid, Sodium Acetylated Hyaluronate, Ascorbic Acid, Limnanthes Alba Seed Oil, 3-O-Ethyl Ascorbic Acid, Glutathione
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.
Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.
Hydrogenated Polydecene is an emollient. It creates a non-occlusive film on the skin that offers extra protection for your skin barrier.
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.
Pentaerythrityl Tetraethylhexanoate is an emollient. Emollients help your skin stay soft and smooth by creating a thin film on top. This film helps trap moisture. It also helps improve the texture of products by adding thickness or helping to create a silky feel.
6 Benefits
Niacinamide has emerged as an all-star ingredient due to its many benefits.
Dimethicone is a silicone used for making products smooth and silky. It also has the added benefit of sealing in hydration. The amount of dimethicone found in beauty products is considered safe and non-comedogenic, meaning it won't clog pores.
Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
2 Concerns
Butyrospermum Parkii Butter is a plant lipid from the fruit of the Shea Tree. It is an effective skin hydrator and emollient.
2 Concerns
Hydrogenated Vegetable Oil is created by adding hydrogen to vegetable oil in order to give it more stability. This process also raises the melting point of vegetable oil. In cosmetics, it is an emollient.
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.
Not safe for Fungal Acne
Palmitoyl Tripeptide-5 isn't fungal acne safe and is a peptide.
Acetyl Hexapeptide-8 is a peptide. A common name for this peptide is Argireline.
EU Allergen
Lavandula Angustifolia Oil is more commonly known as lavender essential oil. Lavandula Angustifolia is known as the English Lavender and famous for creating purple fields in Provence, France.
Citrus Aurantium Dulcis Peel Oil is oil from the peel of an orange fruit.
Rosmarinus Officinalis Leaf Oil is oil expressed from the leaves of the rosemary plant.
Oil EU Allergen
This ingredient comes from the bark of the Cedarwood tree.
Adenosine is in every living organism. It is one of four components in nucleic acids that helps store our DNA.
Glyceryl Stearate Citrate is a citric acid ester of glyceryl stearate.
Polyglyceryl-3 Methylglucose Distearate is created from the diester of stearic acid and the condensation product of methylglucose and Polyglycerin-3.
Glyceryl Stearate is a mix of glycerin and stearic acid.
3 Concerns
Cetearyl alcohol is a mixture of two fatty alcohols: cetyl alcohol and stearyl alcohol. It is mainly used as an emulsifier. Emulsifiers help prevent the separation of oils and products. Due to its composition, it can also be used to thicken a product or help create foam.
Palmitic Acid is a fatty acid found in our skin. In cosmetics, it is usually derived from palm oil. It is a cleanser, emollient, and emulsifier.
Stearic Acid is a fatty acid. It is an emollient, emulsifier, and texture enhancer.
Dimethicone/Vinyl Dimethicone Crosspolymer is a silicone used to improve the texture of products and absorb oil. It does not get absorbed into the skin.
Glyceryl Caprylate comes from glycerin and caprylic acid, a fatty acid from coconut.
Xanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.
Caprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
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.
Ethylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.
Disodium EDTA plays a role in making products more stable by aiding other preservatives.
Carbomer is a polymer of acrylic acid. Its main role is to create gel consistency within products.
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.
2 Concerns
Linalool is a fragrance and helps add scent to products. It's derived from common plants such as cinnamon, mint, citrus, and lavender.
Limonene is a fragrance that adds scent and taste to a formulation.
Water, Glycerin, Hydrogenated Polydecene, Propanediol, Pentaerythrityl Tetraethylhexanoate, Niacinamide, Dimethicone, Butylene Glycol, Butyrospermum Parkii Butter, Hydrogenated Vegetable Oil, Hydroxypropyltrimonium Hyaluronate, Hydrolyzed Hyaluronic Acid, Palmitoyl Tripeptide-5, Acetyl Hexapeptide-8, Lavandula Angustifolia Oil, Citrus Aurantium Dulcis Peel Oil, Rosmarinus Officinalis Leaf Oil, Cedrus Atlantica Bark Oil, Adenosine, Glyceryl Stearate Citrate, Polyglyceryl-3 Methylglucose Distearate, Glyceryl Stearate, Cetearyl Alcohol, Palmitic Acid, Stearic Acid, Dimethicone/Vinyl Dimethicone Crosspolymer, Glyceryl Caprylate, Sodium Polyacrylate, Xanthan Gum, Caprylyl Glycol, 1,2-Hexanediol, Ethylhexylglycerin, Disodium EDTA, Carbomer, Tromethamine, Linalool, Limonene
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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. If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterButylene 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.
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 GlycerinCetearyl alcohol is a mixture of two fatty alcohols: cetyl alcohol and stearyl alcohol. It is mainly used as an emulsifier. Emulsifiers help prevent the separation of oils and products. Due to its composition, it can also be used to thicken a product or help create foam.
Cetearyl alcohol is an emollient. Emollients help soothe and hydrate the skin by trapping moisture.
Studies show Cetearyl alcohol is non-toxic and non-irritating. The FDA allows products labeled "alcohol-free" to have fatty alcohols.
This ingredient is usually derived from plant oils such as palm, vegetable, or coconut oils. There is debate on whether this ingredient will cause acne.
Due to the fatty acid base, this ingredient may not be Malassezia folliculitis safe.
Learn more about Cetearyl AlcoholButyrospermum Parkii Butter is a plant lipid from the fruit of the Shea Tree. It is an effective skin hydrator and emollient.
Emollients help soothe and soften your skin. It does this by creating a protective film on your skin. This barrier helps trap moisture and keeps your skin hydrated. Emollients may be effective at treating dry or itchy skin.
Shea butter is rich in antioxidants. Antioxidants help fight free-radicals, or molecules that may harm the body. It is also full of fatty acids including stearic acid and linoleic acid. These acids help replenish the skin and keep skin moisturized.
While Shea Butter has an SPF rating of about 3-4, it is not a sunscreen replacement.
Shea butter may not be fungal acne safe. We recommend speaking with a professional if you have any concerns.
Learn more about Butyrospermum Parkii ButterDimethicone is a silicone used for making products smooth and silky. It also has the added benefit of sealing in hydration. The amount of dimethicone found in beauty products is considered safe and non-comedogenic, meaning it won't clog pores.
Dimethicone has been found increase absorption in skin, boosting the benefits of other ingredients. While there is concern for the safety of dimethicone, the levels used in skincare are safe for use.
Carbomer is a polymer of acrylic acid. Its main role is to create gel consistency within products.
Carbomer is commonly found in many types of cosmetics products. It is found to be safe in concentrations up to 15%. However, a high amount of carbomer can cause pilling or balling up of products. Most products contain 1% of less of carbomer.
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 TromethamineGlyceryl Stearate is a mix of glycerin and stearic acid.
Glyceryl Stearate is used to stabilize the mixing of water and oil ingredients. By preventing these ingredients from separating, it can help elongate shelf life. It can also help thicken the product's texture.
As an emollient, it helps soften skin and supports barrier-replenishing ingredients.
In cosmetics, Glyceryl Stearate is often made from vegetable oils or synthetically produced. The human body also creates Glyceryl Stearate naturally.
Learn more about Glyceryl StearateGlyceryl Caprylate comes from glycerin and caprylic acid, a fatty acid from coconut.
Glyceryl Caprylate is used for its emollient and emulsifier properties.
As an emollient, it helps hydrate your skin. Emollients work by creating a barrier on your skin to trap moisture in, helping to keep your skin soft and smooth.
Glyceryl Caprylate helps keep the ingredients such as oil and water together as an emulsifier.
Learn more about Glyceryl CaprylatePropanediol 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 PropanediolStearic Acid is a fatty acid. It is an emollient, emulsifier, and texture enhancer.
As an emollient, stearic acid helps soften skin. It aids the skin's protective barrier by preventing water loss. It also provides a gentle cleansing effect without stripping away natural oils.
Stearic acid may also be used to enhance the texture of products. It can add volume and stabilize ingredients such as water and oil. This can help water and oil ingredients from separating.
Sources of stearic acid include animal or vegetable fats/oils such as coconut or shea. It can be naturally found in butter, cocoa butter, shea butter, vegetable fats, and animal tallow.
This ingredient may not be Malassezia folliculitis, or fungal-acne safe.
Learn more about Stearic AcidPolyglyceryl-3 Methylglucose Distearate is created from the diester of stearic acid and the condensation product of methylglucose and Polyglycerin-3.
As an emulsifier, it is used to bind ingredients together. Many ingredients, such as oils and water, separate naturally. Emulsifiers prevent them from separating to ensure even consistency in texture.
One of the manufacturer for this ingredient states it is vegetable-based. It is also claimed to be stable at both high and low temperatures.
This ingredient may not be safe for fungal acne. We recommend speaking with a professional if you have any concerns.
Learn more about Polyglyceryl-3 Methylglucose DistearatePalmitic Acid is a fatty acid found in our skin. In cosmetics, it is usually derived from palm oil. It is a cleanser, emollient, and emulsifier.
As an emollient, it helps hydrate the skin. The emulsifying properties keep ingredients together in a product.
Palmitic Acid may not be fungal-acne safe. It can worsen oily skin and cause breakouts due to its emollient nature.
Learn more about Palmitic AcidEthylhexylglycerin (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.
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 EDTAAdenosine is in every living organism. It is one of four components in nucleic acids that helps store our DNA.
Adenosine has many benefits when used. These benefits include hydrating the skin, smoothing skin, and reducing wrinkles. Once applied, adenosine increases collagen production. It also helps with improving firmness and tissue repair.
Studies have found adenosine may also help with wound healing.
In skincare products, Adenosine is usually derived from yeast.
Learn more about Adenosine1,2-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.
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 AcidIngredient Ratings
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