Here's our complete breakdown comparing the ingredients, attributes, and more of The Ordinary Multi-Peptide Serum for Hair Density versus The INKEY List Caffeine Stimulating Scalp Treatment .
Last updated on October 25, 2023. Published on August 02, 2023
Overview
What they are
These products are both vegan, cruelty-free, and reef safe . They have a total of 11 ingredients in common
Cool Features
They both contain AHA
Suited For
They're both likely to be good for anti aging, dry skin, brightening skin, sensitive skin, reducing pores, scar healing, dark spots and better texture
Free From
They both do not contain any harsh alcohols, common allergens, fragrances, parabens, silicones or sulfates
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that need an update? Let us know.
Hair Loss
Products to help treat hair loss and thinning hair.
Scalp Treatment
Products to help treat conditions relating to the scalp.
Price
Ingredient Info
The Ordinary Multi-Peptide Serum for Hair Density 36 ingredients
The INKEY List Caffeine Stimulating Scalp Treatment 15 ingredients
Alcohol Free
This product is free of harsh alcohols 🎉
Silicon Free
This product is free of silicons 🎉
Fragrance Free
This product is free of fragrances 🎉
Sulfate Free
This product is free of sulfates 🎉
Paraben Free
This product is free of parabens 🎉
Contains Oils
Ingredients in this product that are types of oil:
Not Malassezia Safe
Ingredients in this product that are not malassezia safe:
Reef Safe
This product is free of ingredients that damage reefs 🎉
EU Allergen Free
This product is free of EU allergens 🎉
Vegan
This product is vegan 🎉
Cruelty Free
This product is cruelty-free 🎉
Alcohol Free
This product is free of harsh alcohols 🎉
Silicon Free
This product is free of silicons 🎉
Fragrance Free
This product is free of fragrances 🎉
Sulfate Free
This product is free of sulfates 🎉
Paraben Free
This product is free of parabens 🎉
Oil Free
This product is free of oils 🎉
Malassezia Safe
This product is free of malassezia feeding ingredients 🎉
Reef Safe
This product is free of ingredients that damage reefs 🎉
EU Allergen Free
This product is free of EU allergens 🎉
Vegan
This product is vegan 🎉
Cruelty Free
This product is cruelty-free 🎉
At a glance
Click on any of the items below to learn more
The Ordinary Multi-Peptide Serum for Hair Density 36 ingredients
The INKEY List Caffeine Stimulating Scalp Treatment 15 ingredients
Notable Ingredients
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
Benefits
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 3 ingredients that may have this attribute:
This product contains 3 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
Concerns
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
Notable Ingredients
This product contains 1 ingredient that may have this attribute:
Benefits
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
Concerns
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
Build your routine, track which ingredients work for you, and much more with your free account.
Join SkinSortIngredients Compared
Ingredients that are highlighted in purple are present in both products.
The Ordinary Multi-Peptide Serum for Hair Density 36 ingredients
The INKEY List Caffeine Stimulating Scalp Treatment 15 ingredients
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
Ingredients Side-by-side
Ingredients that are highlighted in purple are present in both products.
Learn more about what what Com. / Irr. ratings are
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. Talk about multi-purpose! If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterThe Ordinary Multi-Peptide Serum for Hair Density contains this as ingredient number 1.
The INKEY List Caffeine Stimulating Scalp Treatment contains this as ingredient number 1.
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 GlycerinThe Ordinary Multi-Peptide Serum for Hair Density contains this as ingredient number 4.
The INKEY List Caffeine Stimulating Scalp Treatment contains this as ingredient number 6.
Caffeine is most associated with coffee, tea, and cacao. In skincare, it helps with calming inflammation and anti-aging.
Caffeine is an antioxidants, which help with the signs of aging. This is because antioxidants help fight skin-damaging free radical molecules.
While caffeine is used to treat cellulite and and dark circles, further studies are needed to prove this. It has been believed to help with these skin conditions due to its ability to dilate blood vessels and increase blood flow.
Some studies are looking into caffeine's ability to protect against UV rays.
Learn more about CaffeineThe Ordinary Multi-Peptide Serum for Hair Density contains this as ingredient number 5.
The INKEY List Caffeine Stimulating Scalp Treatment contains this as ingredient number 3.
Larix Europaea is a larch tree native to Europe.
It is used in the treatment Redensyl, an alternative to Minoxidil for hair growth. Redensyl targets stem cells and fibroblasts from top, inner layer of your skin.
Larix Europaea bark contains antioxidants and phytoconstituents such as flavonoids, spiro-polyphenols, and procyanidins.
Flavonoids are naturally-occuring compounds in plants. You can also find them in foods such as wine, tea, and chocolate.
Flavonoids are powerful antioxidants and are anti-inflammation. Antioxidants help your body fight off free-radical molecules. Free-radical molecules are unstable and may cause damage to cells.
Learn more about Larix Europaea Wood ExtractThe Ordinary Multi-Peptide Serum for Hair Density contains this as ingredient number 8.
The INKEY List Caffeine Stimulating Scalp Treatment contains this as ingredient number 13.
Glycine is an amino acid that helps build proteins. It is already present in our skin as our bodies produce them naturally.
Glycine helps keep skin hydrated and reduce signs of aging. Amino acids help transport moisture throughout our skin; glycine already plays a role in helping keep our skin moisturized.
As collagen is made up of glycine and other amino acids, it is believed Glycine may help our skin produce more collagen. Collagen helps keep skin plump and firm.
Learn more about GlycineThe Ordinary Multi-Peptide Serum for Hair Density contains this as ingredient number 18.
The INKEY List Caffeine Stimulating Scalp Treatment contains this as ingredient number 12.
We don't have a description for Zinc Chloride.
The Ordinary Multi-Peptide Serum for Hair Density contains this as ingredient number 20.
The INKEY List Caffeine Stimulating Scalp Treatment contains this as ingredient number 15.
Lactic Acid is an AHA that is derived from fermenting lactose, a carbohydrate from milk. It removes the top layer of old and dead skin cells and helps increase cell turnover.
Benefits of Lactic Acid are that it can help to reduce large pores and reduce the effects of aging. Some potential downsides are that it can be bad for dry skin, cause irritation, worsen eczema, and worsen rosacea.
Not only does it help exfoliate the skin, it helps strengthen the skin's barrier. When applied, lactic acid helps the skin create ceramides.
Lactic acid is an over-the-counter chemical exfoliant that comes from the fermentation of lactose — a carbohydrate found in milk.
Legend has it that Cleopatra used to bathe in sour milk to help reduce wrinkles.
Read more about some other popular AHA's here:
Learn more about Lactic AcidThe Ordinary Multi-Peptide Serum for Hair Density contains this as ingredient number 21.
The INKEY List Caffeine Stimulating Scalp Treatment contains this as ingredient number 10.
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.
On the technical side of things, xanthan gum is a polysaccharide - a combination consisting of multiple sugar molecules bonded together.
Xanthan gum is a pretty common and great ingredient. It is a natural, non-toxic, non-irritating ingredient that is also commonly used in food products.
Learn more about Xanthan GumThe Ordinary Multi-Peptide Serum for Hair Density contains this as ingredient number 26.
The INKEY List Caffeine Stimulating Scalp Treatment contains this as ingredient number 7.
Trisodium Ethylenediamine Disuccinate is used to help stabilize a product.
It is a chelating agent, meaning it helps prevent metal ions from binding to other ingredients. This prevents unwanted reactions in products. Metal ions can come into a product via the water ingredient. They are found in trace amounts and are not known to be harmful.
The Ordinary Multi-Peptide Serum for Hair Density contains this as ingredient number 32.
The INKEY List Caffeine Stimulating Scalp Treatment contains this as ingredient number 9.
Sodium Metabisulfite is an antioxidant and is a preservative.
The Ordinary Multi-Peptide Serum for Hair Density contains this as ingredient number 33.
The INKEY List Caffeine Stimulating Scalp Treatment contains this as ingredient number 11.
Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent germ and 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.
The Ordinary Multi-Peptide Serum for Hair Density contains this as ingredient number 35.
The INKEY List Caffeine Stimulating Scalp Treatment contains this as ingredient number 5.
Here's what our community thinks of the ingredients in these two products.
The Ordinary Multi-Peptide Serum for Hair Density 36 ingredients
The INKEY List Caffeine Stimulating Scalp Treatment 15 ingredients
Usage
Here's some more info on how this product is used by our community.
When to use
The Ordinary Multi-Peptide Serum for Hair Density 36 ingredients
The INKEY List Caffeine Stimulating Scalp Treatment 15 ingredients
Reviews
Here's what our community thinks
The INKEY List Caffeine Stimulating Scalp Treatment 15 ingredients
Alternatives
Our Dupe Finder has found 3 potential alternatives that have similar ingredients to The Ordinary Multi-Peptide Serum for Hair Density.
See 3 alternativesOur Dupe Finder has found 7 potential alternatives that have similar ingredients to The INKEY List Caffeine Stimulating Scalp Treatment.
See 7 alternatives
