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The Ordinary Multi-Peptide Serum for Hair Density Ingredients Explained

4.0   from 2 ratings
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Updated on October 25, 2023 Submitted by sandbag

Overview

What it is

Hair loss with 36 ingredients that contains AHA, peptides and PHA

Cool Features

It is vegan, cruelty-free, and reef safe

Suited For

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

Free From

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

Fun facts

The Ordinary is from Canada. This product is used in 44 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

AHA
PHA
Peptides (2)

Benefits

Hydrating
Redness Reducing
Reduces Irritation
Skin Texture (2)
Reduces Large Pores (3)
Anti-Aging (3)
Dark Spots
Scar Healing (2)
Acne Fighting
Brightening (2)

Concerns

Irritating
Rosacea
Eczema

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

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
Solvent
3
Humectant, Masking, Skin Conditioning, Solvent
1 / 0
4
Humectant, Skin Conditioning, Skin Protecting, Solvent
0 / 0
Helps hydrate Dry Skin IconHelps brighten skin Icon
5
Skin Conditioning
6
Peptide Icon
7
Skin Protecting
Peptide Icon
8
Humectant, Skin Conditioning
9
Skin Conditioning, Skin Protecting
10
Astringent, Humectant, Soothing
Good for Scar Healing Icon
11
Skin Conditioning, Skin Protecting
12
Emollient, Skin Conditioning
13
Astringent, Masking
Good for Minimizing Pores Icon
14
Antimicrobial, Antioxidant, Astringent, Emollient, Humectant, Masking, Skin Conditioning, Skin Protecting, Tonic
Antioxidant IconHelps reduce Skin Redness IconHelps reduce irritation IconGood for Minimizing Pores IconHelps with Anti-Aging IconHelps fight Acne Icon
15
Antioxidant
Antioxidant Icon
16
Skin Conditioning
17
Masking, Skin Conditioning
Not safe for Fungal Acne Icon
18
Buffering, Skin Conditioning
19
Humectant, Skin Conditioning
20
Soothing
21
Buffering, Humectant, Skin Conditioning
AHA IconMay cause irritation IconGood for Skin Texture IconGood for Minimizing Pores IconHelps with Anti-Aging IconGood for Dark Spots IconGood for Scar Healing IconMay worsen Eczema IconMay worsen Rosacea IconHelps brighten skin Icon
22
Skin Conditioning
PHA IconGood for Skin Texture IconHelps with Anti-Aging Icon
23
24
Absorbent, Emulsion Stabilising, Skin Conditioning
25
Emulsion Stabilising, Stabilising
26
Emulsifying, Emulsion Stabilising, Gel Forming, Skin Conditioning
27
Skin Conditioning, Solvent
28
Solvent
29
Emulsifying
0 / 0
Not safe for Fungal Acne Icon
30
Skin Conditioning
31
Emulsifying
Oil IconNot safe for Fungal Acne Icon
32
33
Antioxidant, Preservative
Antioxidant IconPreservative Icon
34
Masking, Preservative
Preservative Icon
35
Preservative
Preservative Icon
36
Antimicrobial, Preservative
Preservative Icon

Ingredients Explained

This product contains 36 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: 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
3
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.

4
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
5
What it does: Skin Conditioning
Community Rating: Loved

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 Caffeine
6
What it does:
Community Rating: Loved

Biotinoyl Tripeptide-1 is a peptide.

7
What it does: Skin Protecting
Community Rating: Loved

Acetyl Tetrapeptide-3 is a peptide.

8
What it does: Humectant, Skin Conditioning

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 Extract
9
What it does: Skin Conditioning, Skin Protecting
Community Rating: Liked

We don't have a description for Pisum Sativum Extract.

10
What it does: Astringent, Humectant, Soothing
Community Rating: Loved

Scutellaria Baicalensis Root Extract comes from the Baikal skullcap or Chinese skullcap plant. This plant is native to Northeast Asia and can be found in China, Mongolia, Korea, and Siberia.

In cosmetics, Scutellaria Baicalensis Root Extract provides antioxidant and anti-inflammatory benefits. This is due to the flavonoid composition of Scutellaria Baicalensis Root Extract.

In Chinese traditional folk medicine, Scutellaria Baicalensis Root Extract is used to help treat lung and hypertension.

Learn more about Scutellaria Baicalensis Root Extract
11
What it does: Skin Conditioning, Skin Protecting
Community Rating: Liked

This ingredient is extracted from the germ part of the wheat plant. The germ of a plant refers to the seed embryo, or part that sprouts into a new plant.

Some studies have found wheat germ to help with wound healing.

12
What it does: Emollient, Skin Conditioning

We don't have a description for Glycine Soja Germ Extract.

13
What it does: Astringent, Masking

Trifolium Pratense Flower Extract can help to reduce large pores.

14
What it does: Antimicrobial, Antioxidant, Astringent, Emollient, Humectant, Masking, Skin Conditioning, Skin Protecting, Tonic
Community Rating: Loved

Camellia Sinensis Leaf Extract is derived from the leaves of the tea plant. Black tea, green tea, and oolong tea are all harvested from this plant.

Camellia Sinensis Leaf Extract has many benefits. It contains polyphenols, a strong antioxidant. Antioxidants help fight off free-radical molecules that damage skin cells. The antioxidants in green tea neutralize free-radicals from the sun. This gives the skin some extra UV protection, but should not replace sunscreen.

Many components of tea have anti-inflammatory properties. Polyphenols and L-theanine help soothe the skin and reduce irritation. L-theanine is an amino acid that makes up most of the amino acids found in tea leaves. The caffeine in Camellia Sinensis Leaf Extract helps calm inflamed blood vessels.

Camellia Sinensis Leaf Extract also contains Vitamin Bs, linoleic acid, magnesium, calcium, iron, and zinc.

Camellia Sinensis Leaf Extract also has antimicrobial properties.

Research has shown both drinking Camellia Sinensis Leaf Tea and applying it to the skin can help boost skin elasticity and hydration. Studies also show using tea extract may reduce sebum, or oil, production.

Learn more about Camellia Sinensis Leaf Extract
15
What it does: Antioxidant

Apigenin is an antioxidant.

16
What it does: Skin Conditioning

We don't have a description for Oleanolic Acid.

17
What it does: Masking, Skin Conditioning
Community Rating: Mixed

Arginine is an amino acid that is important for human development. Your body uses is it to produce hair keratin and skin collagen.

As a cosmetic ingredient, Arginine has antioxidant properties and can also help repair damaged skin. This ingredient is derived either synthetically or from animals.

Arginine isn't fungal acne safe when used in the presence of other lipids (fats, fatty acids, oils, esters, etc). Oils and fats occur naturally within the skin, so take caution when using Arginine if you're prone to fungal acne.

Learn more about Arginine
18
What it does: Buffering, Skin Conditioning
Community Rating: Liked

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 Glycine
19
What it does: Humectant, Skin Conditioning

We don't have a description for Calcium Gluconate.

20
What it does: Soothing

We don't have a description for Zinc Chloride.

21
What it does: Buffering, Humectant, Skin Conditioning
Community Rating: Loved

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 β€” 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 Acid
22
What it does: Skin Conditioning
Community Rating: Liked

Gluconolactone is a PHA. PHAs have a larger structure than AHAs and BHAs and are more gentle. It is an created by reacting gluconic acid with an alcohol.

When applied, Gluconolactone has the same affect on skin as AHAs such as lactic acid. It helps dissolve the dead skin cells in the top layer of your skin. This helps improve texture and brightens the skin.

Gluconolactone is a humectant and helps draw moisture to your skin. This helps keep your skin hydrated.

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.

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

In a 2004 study, Gluconolactone was found to prevent UV damage in mouse skin cells. However, we still recommend wearing SPF especially after using exfoliating ingredients.

Learn more about Gluconolactone
23
What it does:

We don't have a description for Dextran.

24
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
25
What it does: Emulsion Stabilising, Stabilising
Community Rating: Mixed

Hydroxyethylcellulose is used to improve the texture of products. It is created from a chemical reaction involving ethylene oxide and alkali-cellulose. Cellulose is a sugar found in plant cell walls and help give plants structure.

Hydroxyethylcellulose helps stabilize products by preventing ingredients from separating. It can also help thicken the texture of a product.

This ingredient can also be found in pill medicines to help our bodies digest other ingredients.

Learn more about Hydroxyethylcellulose
26
What it does: Emulsifying, Emulsion Stabilising, Gel Forming, Skin Conditioning
Community Rating: Disliked

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 Gum
27
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
28
What it does: Solvent
Community Rating: Disliked

Dimethyl Isosorbide is a solvent and helps deliver actives into your skin. It is created from sorbitol.

As a solvent, dimethyl isosorbide helps dissolve other ingredients. This helps ensure even distribution of an ingredient. It may also be used to decrease the thickness of a product.

Studies show dimethyl isosorbide is able to penetrate skin to deliver other ingredients into the skin, making them more effective.

Learn more about Dimethyl Isosorbide
29
What it does: Emulsifying
Community Rating: Very Disliked

Polysorbate 20 is made by combining ethoxylation of sorbitan, ethylene oxide, and lauric acid. It is a mild cleansing agent, surfactant, and emulsifier.

As a surfactant, it helps collect dirt and oils for washing. Emulsifiers prevent oils and water from separating.

Polysorbate 20 also adds scent to a product. Since it is made using sorbitol, it has a sweet scent. Sorbitol can also be found in fruits such as apples and peaches.

The lauric acid used to create Polysorbate 20 is often derived from coconuts.

Polysorbate 20 may not be fungal acne safe.

Learn more about Polysorbate 20
30
What it does: Skin Conditioning
Community Rating: Disliked

We don't have a description for Ppg-26-Buteth-26.

31
What it does: Emulsifying
Community Rating: Very Disliked

Peg-40 Hydrogenated Castor Oil is derived from castor oil and polyethylene glycol (PEG). It is used as a emollient and emulsifier.

As an emulsifier, it helps prevent ingredients from separating. It also helps make the other ingredients more soluble; it is often used to solubilize fragrances. This increases spreadability and elongates shelf life in a product.

Emollients help soothe and soften the skin. They do 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.

This ingredient may or may not be vegan, depending on the source.

Peg-40 Hydrogenated Castor Oil may not be fungal-acne safe. We recommend speaking with a professional if you have any questions or concerns.

Learn more about Peg-40 Hydrogenated Castor Oil
32
What it does:
Community Rating: Liked

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.

33
What it does: Antioxidant, Preservative
Community Rating: Mixed

Sodium Metabisulfite is an antioxidant and is a preservative.

34
What it does: Masking, Preservative
Community Rating: Disliked

Sodium Benzoate is a preservative. It's used in both cosmetic and food products to inhibit the growth of mold and bacteria. It is typically produced synthetically.

Both the US FDA and EU Health Committee have approved the use of sodium benzoate. In the US, levels of 0.1% (of the total product) are allowed.

Sodium benzoate works as a preservative by inhibiting the growth of bacteria inside of cells. It prevents the cell from fermenting a type of sugar using an enzyme called phosphofructokinase.

Sodium Benzoate is the salt of benzoic acid. Foods containing sodium benzoate include soda, salad dressings, condiments, fruit juices, wines, and snack foods.

Studies for using ascorbic acid and sodium benzoate in cosmetics are lacking, especially in skincare routines with multiple steps.

We always recommend speaking with a professional, such as a dermatologist, if you have any concerns.

Learn more about Sodium Benzoate
35
What it does: Preservative
Community Rating: Very Disliked

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.

36
What it does: Antimicrobial, Preservative
Community Rating: Disliked

Chlorphenesin is a synthetic preservative. It helps protect a product against bacteria in order to extend shelf life. In most cases, Chlorphenesin is paired with other preservatives such as phenoxyethanol and caprylyl glycol.

Chlorphenesin is a biocide. This means it is able to help fight the microorganisms on our skin. It is also able to fight odor-releasing bacteria.

Chlorphenesin is soluble in both water and glycerin.

Studies show Chlorphenesin is easily absorbed by our skin. You should speak with a skincare professional if you have concerns about using Chlorphenesin.

Learn more about Chlorphenesin
Embed Ingredients

Here's what our community thinks of the 36 ingredients in this product ✨

42% are loved or liked
14% have mixed ratings
22% are disliked or very disliked
22% have no rating yet

When to use

We've created a guide with info on when you should use The Ordinary Multi-Peptide Serum for Hair Density. We've also included some recommended products to use it with, as well as some routine inspiration!

Read our guide on when to use Multi-Peptide Serum for Hair Density ->
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The data we've presented on this page has been verified by a member of the SkinSort Team.

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