Numbuzin No.9 NAD+ PDRN Glow Boosting Toner Versus COSRX The 6 Peptide Skin Booster Serum
Updated on July 16, 2025
Overview
What they are
These products are both cruelty-free and reef safe . They have a total of 18 ingredients in common
Cool Features
They both contain niacinamide, peptides and Vitamin E
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture
Free From
They both do not contain any common allergens, parabens, silicones or sulfates
What's Inside
They both contain harsh alcohols, fragrances and oils
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
Numbuzin No.9 NAD+ PDRN Glow Boosting Toner 125 ingredients
COSRX The 6 Peptide Skin Booster Serum 44 ingredients
What's inside
What's inside
At a glance
Click on any of the items below to learn more
Numbuzin No.9 NAD+ PDRN Glow Boosting Toner 125 ingredients
COSRX The 6 Peptide Skin Booster Serum 44 ingredients
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningMethylpropanediol
SolventNiacinamide
Smoothing
PEG/PPG-17/6 Copolymer
SolventPropanediol
Solvent
1,2-Hexanediol
Skin Conditioning
Tripropylene Glycol
Antioxidant
Glyceryl Glucoside
Humectant
Xylitylglucoside
Humectant
PEG-40 Hydrogenated Castor Oil
Emulsifying
Anhydroxylitol
Humectant
Glycerin
Humectant
Polyglyceryl-10 Laurate
Skin Conditioning
Candida Bombicola/Glucose/Methyl Rapeseedate Ferment
AntimicrobialC20-40 Pareth-10
EmulsifyingTocopheryl Acetate
Antioxidant
Xylitol
Humectant
Cetearyl Alcohol
Emollient
Sodium Dna
Skin Conditioning
Hydrogenated Lecithin
Emulsifying
Glucose
Humectant
Polyacrylate Crosspolymer-6
Emulsion StabilisingEthylhexylglycerin
Skin ConditioningAdenosine
Skin Conditioning
Ceramide NP
Skin Conditioning
Sodium Phytate
Helianthus Annuus Seed Oil
Emollient
Melia Azadirachta Leaf Extract
Skin ConditioningMelia Azadirachta Flower Extract
Skin ConditioningCitric Acid
Buffering
Hydroxyethylcellulose
Emulsion StabilisingSodium Citrate
BufferingPhytosterols
Skin Conditioning
Coccinia Indica Fruit Extract
Skin ConditioningAloe Barbadensis Flower Extract
EmollientSolanum Melongena Fruit Extract
Skin ConditioningT-Butyl Alcohol
Perfuming
Ocimum Sanctum Leaf Extract
Skin Conditioning
Curcuma Longa Root Extract
Masking
Corallina Officinalis Extract
Skin Conditioning
Cyanocobalamin
Skin ConditioningCaprylic/Capric Triglyceride
Masking
Hydrolyzed Collagen
Emollient
Butylene Glycol
Humectant
Adenosine Triphosphate
Skin ConditioningNicotinamide Adenine Dinucleotide
Skin ConditioningResveratrol
Antioxidant
Pullulan
Sodium Palmitoyl Sarcosinate
CleansingPalmitic Acid
Emollient
C12-14 Alketh-12
EmulsifyingPisum Sativum Peptide
Skin Conditioning
Stearic Acid
Cleansing
Polyglyceryl-6 Laurate
Emulsifying
Caprylyl Glycol
EmollientDipeptide Diaminobutyroyl Benzylamide Diacetate
Skin Conditioning
Dextran
Hydrolyzed Elastin
EmollientSoluble Collagen
Humectant
Acetyl Tetrapeptide-3
Skin Protecting
Trifolium Pratense Flower Extract
Astringent
Disodium EDTA
Myristic Acid
Cleansing
Acetyl Hexapeptide-8
Humectant
Mannose
HumectantSh-Octapeptide-4
Antioxidant
Sh-Decapeptide-7
Antioxidant
Palmitoyl Pentapeptide-4
Skin Conditioning
Palmitoyl Tripeptide-1
Skin Conditioning
Copper Tripeptide-1
Skin Conditioning
Hexapeptide-9
Skin Conditioning
Nonapeptide-1
Skin Conditioning
Tripeptide-1
Skin Conditioning
Arachidic Acid
Cleansing
Collagen
Moisturising
Elastin
Skin ConditioningGlutathione
Palmitoyl Tetrapeptide-7
Skin Conditioning
Arginine/Lysine Polypeptide
Skin Conditioning
Oligopeptide-29
Antioxidant
Oligopeptide-32
Antiseborrhoeic
Acetyl Tetrapeptide-5
Humectant
Acetyl Tetrapeptide-9
Skin Conditioning
Acetyl Tetrapeptide-2
Skin Conditioning
Acetyl Octapeptide-3
Humectant
Acetyl Hexapeptide-1
Skin Conditioning
Alanine/Histidine/Lysine Polypeptide Copper Hcl
Skin Conditioning
Acetyl Dipeptide-1 Cetyl Ester
Skin Conditioning
Acetyl Sh-Pentapeptide-1
Skin Conditioning
Biotinoyl Tripeptide-1
Dipeptide-4
Skin Conditioning
Hexapeptide-11
Skin Conditioning
Hexapeptide-12
Skin Conditioning
Lauric Acid
Cleansing
Myristoyl Pentapeptide-17
Skin Conditioning
Myristoyl Hexapeptide-16
Skin Conditioning
Myristoyl Pentapeptide-4
Skin Conditioning
Nicotinoyl Tripeptide-1
Antioxidant
Nonapeptide-7
Skin Conditioning
Nicotinoyl Tripeptide-35
Antioxidant
Nicotinoyl Dipeptide-26
Skin Conditioning
Nicotinoyl Dipeptide-23
Skin Conditioning
Octapeptide-2
Skin Conditioning
Palmitoyl Tripeptide-5
Skin Conditioning
Palmitoyl Hexapeptide-12
Skin Conditioning
Pentapeptide-13
Skin Conditioning
Palmitoyl Tetrapeptide-10
Skin Conditioning
Palmitoyl Tripeptide-38
Skin Conditioning
Palmitoyl Tripeptide-29
Skin Conditioning
Palmitoyl Tripeptide-8
Skin Conditioning
Sr-(Oligopeptide-91 Clostridium Botulinum Polypeptide-1)
Skin Conditioning
Tetrapeptide-44
Skin Conditioning
Tetrapeptide-30
Skin Conditioning
Tripeptide-10 Citrulline
Skin Conditioning
Tripeptide-32
Skin Conditioning
Tripeptide-29
Skin Conditioning
Sh-Polypeptide-22
Skin Conditioning
Sh-Oligopeptide-1
Skin Conditioning
Sh-Polypeptide-1
Skin Conditioning
Sh-Polypeptide-9
Skin Conditioning
Sh-Oligopeptide-2
Skin Conditioning
Sh-Polypeptide-11
Sh-Polypeptide-3
Skin Conditioning
Sh-Polypeptide-16
Skin Protecting
Sh-Polypeptide-62
Antioxidant
Water, Methylpropanediol, Niacinamide, PEG/PPG-17/6 Copolymer, Propanediol, 1,2-Hexanediol, Tripropylene Glycol, Glyceryl Glucoside, Xylitylglucoside, PEG-40 Hydrogenated Castor Oil, Anhydroxylitol, Glycerin, Polyglyceryl-10 Laurate, Candida Bombicola/Glucose/Methyl Rapeseedate Ferment, C20-40 Pareth-10, Tocopheryl Acetate, Xylitol, Cetearyl Alcohol, Sodium Dna, Hydrogenated Lecithin, Glucose, Polyacrylate Crosspolymer-6, Ethylhexylglycerin, Adenosine, Ceramide NP, Sodium Phytate, Helianthus Annuus Seed Oil, Melia Azadirachta Leaf Extract, Melia Azadirachta Flower Extract, Citric Acid, Hydroxyethylcellulose, Sodium Citrate, Phytosterols, Coccinia Indica Fruit Extract, Aloe Barbadensis Flower Extract, Solanum Melongena Fruit Extract, T-Butyl Alcohol, Ocimum Sanctum Leaf Extract, Curcuma Longa Root Extract, Corallina Officinalis Extract, Cyanocobalamin, Caprylic/Capric Triglyceride, Hydrolyzed Collagen, Butylene Glycol, Adenosine Triphosphate, Nicotinamide Adenine Dinucleotide, Resveratrol, Pullulan, Sodium Palmitoyl Sarcosinate, Palmitic Acid, C12-14 Alketh-12, Pisum Sativum Peptide, Stearic Acid, Polyglyceryl-6 Laurate, Caprylyl Glycol, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Dextran, Hydrolyzed Elastin, Soluble Collagen, Acetyl Tetrapeptide-3, Trifolium Pratense Flower Extract, Disodium EDTA, Myristic Acid, Acetyl Hexapeptide-8, Mannose, Sh-Octapeptide-4, Sh-Decapeptide-7, Palmitoyl Pentapeptide-4, Palmitoyl Tripeptide-1, Copper Tripeptide-1, Hexapeptide-9, Nonapeptide-1, Tripeptide-1, Arachidic Acid, Collagen, Elastin, Glutathione, Palmitoyl Tetrapeptide-7, Arginine/Lysine Polypeptide, Oligopeptide-29, Oligopeptide-32, Acetyl Tetrapeptide-5, Acetyl Tetrapeptide-9, Acetyl Tetrapeptide-2, Acetyl Octapeptide-3, Acetyl Hexapeptide-1, Alanine/Histidine/Lysine Polypeptide Copper Hcl, Acetyl Dipeptide-1 Cetyl Ester, Acetyl Sh-Pentapeptide-1, Biotinoyl Tripeptide-1, Dipeptide-4, Hexapeptide-11, Hexapeptide-12, Lauric Acid, Myristoyl Pentapeptide-17, Myristoyl Hexapeptide-16, Myristoyl Pentapeptide-4, Nicotinoyl Tripeptide-1, Nonapeptide-7, Nicotinoyl Tripeptide-35, Nicotinoyl Dipeptide-26, Nicotinoyl Dipeptide-23, Octapeptide-2, Palmitoyl Tripeptide-5, Palmitoyl Hexapeptide-12, Pentapeptide-13, Palmitoyl Tetrapeptide-10, Palmitoyl Tripeptide-38, Palmitoyl Tripeptide-29, Palmitoyl Tripeptide-8, Sr-(Oligopeptide-91 Clostridium Botulinum Polypeptide-1), Tetrapeptide-44, Tetrapeptide-30, Tripeptide-10 Citrulline, Tripeptide-32, Tripeptide-29, Sh-Polypeptide-22, Sh-Oligopeptide-1, Sh-Polypeptide-1, Sh-Polypeptide-9, Sh-Oligopeptide-2, Sh-Polypeptide-11, Sh-Polypeptide-3, Sh-Polypeptide-16, Sh-Polypeptide-62
Water
Skin ConditioningDipropylene Glycol
MaskingGlycerin
Humectant
Pentylene Glycol
Skin Conditioning1,2-Hexanediol
Skin Conditioning
Niacinamide
Smoothing
Acetyl Hexapeptide-8
Humectant
Copper Tripeptide-1
Skin Conditioning
Sh-Polypeptide-121
Skin Conditioning
Dipeptide Diaminobutyroyl Benzylamide Diacetate
Skin Conditioning
Oligopeptide-68
Bleaching
Palmitoyl Tripeptide-8
Skin Conditioning
Allantoin
Skin Conditioning
Sodium Hyaluronate
Humectant
Acetyl Glucosamine
Skin ConditioningSerine
Masking
Alanine
MaskingGlycine
Buffering
Threonine
Arginine
Masking
Proline
Skin ConditioningBetaine
Humectant
Sodium PCA
Humectant
Sodium Lactate
BufferingPCA
Humectant
Glutamic Acid
Humectant
Lysine Hcl
Skin Conditioning
Tocopherol
Antioxidant
Dextran
Glycine Soja Oil
Emollient
Hydrogenated Lecithin
Emulsifying
Ammonium Acryloyldimethyltaurate/Vp Copolymer
Polyacrylate Crosspolymer-6
Emulsion StabilisingButylene Glycol
Humectant
Xanthan Gum
EmulsifyingEthylhexylglycerin
Skin ConditioningAdenosine
Skin Conditioning
Polyquaternium-51
Skin Conditioning
Disodium EDTA
Citric Acid
Buffering
Caprylyl Glycol
EmollientT-Butyl Alcohol
Perfuming
Potassium Sorbate
Preservative
Sodium Oleate
CleansingWater, Dipropylene Glycol, Glycerin, Pentylene Glycol, 1,2-Hexanediol, Niacinamide, Acetyl Hexapeptide-8, Copper Tripeptide-1, Sh-Polypeptide-121, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Oligopeptide-68, Palmitoyl Tripeptide-8, Allantoin, Sodium Hyaluronate, Acetyl Glucosamine, Serine, Alanine, Glycine, Threonine, Arginine, Proline, Betaine, Sodium PCA, Sodium Lactate, PCA, Glutamic Acid, Lysine Hcl, Tocopherol, Dextran, Glycine Soja Oil, Hydrogenated Lecithin, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Polyacrylate Crosspolymer-6, Butylene Glycol, Xanthan Gum, Ethylhexylglycerin, Adenosine, Polyquaternium-51, Disodium EDTA, Citric Acid, Caprylyl Glycol, T-Butyl Alcohol, Potassium Sorbate, Sodium Oleate
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
1,2-Hexanediol is a synthetic liquid and another multi-functional powerhouse.
It is a:
- Humectant, drawing moisture into the skin
- Emollient, helping to soften skin
- Solvent, dispersing and stabilizing formulas
- Preservative booster, enhancing the antimicrobial activity of other preservatives
Acetyl Hexapeptide-8, commonly known as Argireline, is a popular peptide in skincare. It’s often referred to as a “Botox-like” ingredient because it helps reduce muscle movement.
By relaxing these micro-movements, Argireline may help minimize the appearance of fine lines and wrinkles. That said, it’s not as powerful as Botox, and research on its long-term effectiveness is still limited.
Beyond smoothing, Argireline may also support collagen production. Collagen is the protein that helps keep your skin firm, bouncy, and well-hydrated by strengthening the skin barrier.
So while Argireline isn’t a miracle fix, it can be a helpful addition to a routine focused on both prevention and skin health.
Read more about other common types of peptides here:
Learn more about Acetyl Hexapeptide-8Adenosine 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 AdenosineButylene Glycol (or BG) is used within cosmetic products for a few different reasons:
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.
Learn more about Butylene GlycolCaprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
It is a common ingredient in many products, especially those designed to hydrate skin. The primary benefits are retaining moisture, skin softening, and promoting a healthy skin barrier.
Though Caprylyl Glycol is an alcohol derived from fatty acids, it is not the kind that can dry out skin.
This ingredient is also used as a preservative to extend the life of products. It has slight antimicrobial properties.
Learn more about Caprylyl GlycolCitric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).
As an AHA, Citric Acid removes the top layer of skin cells from the newer layer of skin underneath. This helps skin to remove dark spots and even out skin tone.
If you spot Citric Acid near the end of an ingredient list, it's likely there as a pH adjuster rather than an active ingredient.
Read more about some other popular AHA's here:
Learn more about Citric AcidCopper Tripeptide-1 (GHK-Cu) is a skin repairing ingredient known for its ability to boost collagen, improve firmness, and support skin regeneration.
It is a complex made up of a naturally occurring peptide (glycine-histidine-lysine) and copper, an essential trace element.
While studying wound healing, researchers noticed GHK-Cu stimulated hair follicle enlargement and growth by keeping hair in its active growth phase longer. This has made it a promising ingredient for hair regrowth treatments.
Some people have reported increased facial hair. While GHK-Cu can make your hair follicles bigger, it usually doesn’t turn soft, barely-visible facial hairs into thick, dark ones.
Anecdotal reports suggest that overusing copper peptides might lead to premature aging due to excess free copper or enzyme imbalances. This claim isn’t backed by large-scale studies.
Unfortunately, there are limited human studies for this ingredient. While early results are promising, many studies are either small, in-vitro, or not rigorously controlled.
For example, there is a 1998 study that explored the effects of copper tripeptide, vitamin C, tretinoin, and melatonin on skin repair and collagen synthesis.
After one month, increased procollagen production was seen in 7 out of 10 participants using copper tripeptide (more than those using vitamin C, melatonin, or tretinoin.
While the study was exploratory, it offers early evidence that copper tripeptide may support collagen production. Larger, well-designed trials are still needed to confirm its potential and understand individual responses.
Read more about other common types of peptides here:
Learn more about Copper Tripeptide-1Dextran is a sugar (polysaccharide) with skin hydrating properties.
Fun fact: Louis Pasteur first discovered this ingredient as a microbial product in wine.
This small molecule peptide has similar benefits to Argireline, the "botox" peptide.
According to the manufacturer, this peptide mimics snake venom to freeze muscles. This prevents muscle movement and contractions to prohibit the formation of fine lines and wrinkles.
While this seems promising, research is lacking in proving this ingredient to be as effective as botox.
Learn more about Dipeptide Diaminobutyroyl Benzylamide DiacetateDisodium 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 EDTAEthylhexylglycerin (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.
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 GlycerinHydrogenated Lecithin is created from the hydrogenation of lecithin (a group of phospholipids). Hydrogenation is a chemical reaction between hydrogen and another element.
This ingredient is an emollient and emulsifier. As an emollient, it helps soften skin by trapping moisture within. As an emulsifier, it prevents oil and water ingredients from separating.
Niacinamide is a multitasking form of vitamin B3 that strengthens the skin barrier, reduces pores and dark spots, regulates oil, and improves signs of aging.
And the best part? It's gentle and well-tolerated by most skin types, including sensitive and reactive skin.
You might have heard of "niacin flush", or the reddening of skin that causes itchiness. Niacinamide has not been found to cause this.
In very rare cases, some individuals may not be able to tolerate niacinamide at all or experience an allergic reaction to it.
If you are experiencing flaking, irritation, and dryness with this ingredient, be sure to double check all your products as this ingredient can be found in all categories of skincare.
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.
When you apply niacinamide to your skin, your body converts it into nicotinamide adenine dinucleotide (NAD). NAD is an essential coenzyme that is already found in your cells as "fuel" and powers countless biological processes.
In your skin, NAD helps repair cell damage, produce new healthy cells, support collagen production, strengthen the skin barrier, and fight environmental stressors (like UV and pollution).
Our natural NAD levels start to decline with age, leading to slower skin repair, visible aging, and a weaker skin barrier. By providing your skin niacinamide, you're recharging your skin's NAD levels. This leads to stronger, healthier, and younger looking skin.
Another name for vitamin B3 is nicotinamide. This vitamin is water-soluble and our bodies don't store it. We obtain Vitamin B3 from either food or skincare. Meat, fish, wheat, yeast, and leafy greens contain vitamin B3.
The type of niacinamide used in skincare is synthetically created.
Learn more about NiacinamideThis synthetic peptide is created from palmitic acid, arginine, histidine, and phenylalanine.
According to the manufacturer, this peptide is great at soothing skin inflammation.
Polyacrylate Crosspolymer-6 is a texture enhancer and pH adjuster.
It is be used to thicken water-based products and create a gel-texture with a velvet feel.
One manufacturer claims this ingredient to have a pH range of 2-8 and to be biodegradable.
Learn more about Polyacrylate Crosspolymer-6T-Butyl Alcohol it is most commonly used as a solvent.
At room temperature, T-Butyl Alcohol melts and has a similar smell to camphor.
This ingredient is derived from isobutane. It is the simplest form of a tertiary alcohol. Due to its chemical structure, it is more resistant to oxidation.
Learn more about T-Butyl AlcoholWater. 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 WaterIngredient Ratings
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Numbuzin No.9 NAD+ PDRN Glow Boosting Toner 125 ingredients
COSRX The 6 Peptide Skin Booster Serum 44 ingredients
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