The Ordinary Multi-Peptide Serum for Hair Density Versus Kérastase Nutritive 8H Magic Night Serum Hydrating Treatment
Updated on March 17, 2025
Overview
What they are
These products are both reef safe . They have a total of 4 ingredients in common
Suited For
They're both likely to be good for 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 parabens or sulfates
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
The Ordinary Multi-Peptide Serum for Hair Density 36 ingredients
Kérastase Nutritive 8H Magic Night Serum Hydrating Treatment 29 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
The Ordinary Multi-Peptide Serum for Hair Density 36 ingredients
Kérastase Nutritive 8H Magic Night Serum Hydrating Treatment 29 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningPropanediol
SolventButylene Glycol
Humectant
Glycerin
Humectant
Caffeine
Skin ConditioningBiotinoyl Tripeptide-1
Acetyl Tetrapeptide-3
Skin Protecting
Larix Europaea Wood Extract
HumectantPisum Sativum Extract
Skin ConditioningScutellaria Baicalensis Root Extract
AstringentTriticum Vulgare Germ Extract
Skin ConditioningGlycine Soja Germ Extract
EmollientTrifolium Pratense Flower Extract
Astringent
Camellia Sinensis Leaf Extract
Antimicrobial
Apigenin
Antioxidant
Oleanolic Acid
Skin ConditioningArginine
Masking
Glycine
Buffering
Calcium Gluconate
HumectantZinc Chloride
SoothingLactic Acid
Buffering
Gluconolactone
Skin Conditioning
Dextran
Maltodextrin
AbsorbentHydroxyethylcellulose
Emulsion StabilisingXanthan Gum
EmulsifyingPentylene Glycol
Skin ConditioningDimethyl Isosorbide
SolventPolysorbate 20
Emulsifying
PPG-26-Buteth-26
Skin ConditioningPEG-40 Hydrogenated Castor Oil
Emulsifying
Trisodium Ethylenediamine Disuccinate
Sodium Metabisulfite
Antioxidant
Sodium Benzoate
Masking
Phenoxyethanol
Preservative
Chlorphenesin
Antimicrobial
Water, Propanediol, Butylene Glycol, Glycerin, Caffeine, Biotinoyl Tripeptide-1, Acetyl Tetrapeptide-3, Larix Europaea Wood Extract, Pisum Sativum Extract, Scutellaria Baicalensis Root Extract, Triticum Vulgare Germ Extract, Glycine Soja Germ Extract, Trifolium Pratense Flower Extract, Camellia Sinensis Leaf Extract, Apigenin, Oleanolic Acid, Arginine, Glycine, Calcium Gluconate, Zinc Chloride, Lactic Acid, Gluconolactone, Dextran, Maltodextrin, Hydroxyethylcellulose, Xanthan Gum, Pentylene Glycol, Dimethyl Isosorbide, Polysorbate 20, PPG-26-Buteth-26, PEG-40 Hydrogenated Castor Oil, Trisodium Ethylenediamine Disuccinate, Sodium Metabisulfite, Sodium Benzoate, Phenoxyethanol, Chlorphenesin
Water
Skin ConditioningDimethicone
Emollient
C13-16 Isoalkane
SolventNiacinamide
Smoothing
Glycerin
Humectant
Polyacrylamide
Phenoxyethanol
Preservative
C13-14 Isoparaffin
Emollient
Laureth-7
EmulsifyingPanthenol
Skin Conditioning
Ascorbyl Glucoside
Antioxidant
Butylene Glycol
Humectant
Linalool
Perfuming
Hydroxycitronellal
Perfuming
Benzyl Salicylate
Perfuming
Benzyl Alcohol
Perfuming
Hexyl Cinnamal
Perfuming
Citronellol
Perfuming
Hydrolyzed Wheat Protein
Skin ConditioningAlpha-Isomethyl Ionone
Perfuming
Coumarin
Perfuming
Hydrolyzed Corn Protein
Skin ConditioningHydrolyzed Soy Protein
HumectantLimonene
Perfuming
Iris Florentina Root Extract
MaskingCitric Acid
Buffering
CI 19140
Cosmetic ColorantCI 14700
Cosmetic ColorantParfum
Masking
Water, Dimethicone, C13-16 Isoalkane, Niacinamide, Glycerin, Polyacrylamide, Phenoxyethanol, C13-14 Isoparaffin, Laureth-7, Panthenol, Ascorbyl Glucoside, Butylene Glycol, Linalool, Hydroxycitronellal, Benzyl Salicylate, Benzyl Alcohol, Hexyl Cinnamal, Citronellol, Hydrolyzed Wheat Protein, Alpha-Isomethyl Ionone, Coumarin, Hydrolyzed Corn Protein, Hydrolyzed Soy Protein, Limonene, Iris Florentina Root Extract, Citric Acid, CI 19140, CI 14700, Parfum
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.
- It has mild preservative properties.
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with 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 GlycerinPhenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent microbial growth. By itself, it has a scent that is similar to that of a rose.
It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.
Ingredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
The Ordinary Multi-Peptide Serum for Hair Density 36 ingredients
Kérastase Nutritive 8H Magic Night Serum Hydrating Treatment 29 ingredients
Reviews
Here's what our community thinks
The Ordinary Multi-Peptide Serum for Hair Density 36 ingredients
It certainly has a positive effect. Even though I have sebderm it does not break me out much, even with all the oily ingredients.
It is not too hard to apply and overall I am happy
Unfortunately, this hair serum didn't work for me—it left my scalp greasy, itchy, and even caused dandruff.
Kérastase Nutritive 8H Magic Night Serum Hydrating Treatment 29 ingredients
Repairs your hair super quickly and makes shiny and soft
I loved applying this every night. and I wake up with softer and smoother hair. This smells so good too! Would love to repurchase, but this is so expensive.
