COSRX Peptide-132 Ultra Perfect Hair Bonding Shampoo Versus Olaplex No.4 Bond Maintenance Shampoo

COSRX Peptide-132 Ultra Perfect Hair Bonding Shampoo Versus Olaplex No.4 Bond Maintenance Shampoo

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Sodium C14-16 Olefin Sulfonate

Glycerin

Disodium Laureth Sulfosuccinate

Cocamidopropyl Betaine

Caprylyl/Capryl Glucoside

Lauryl Hydroxysultaine

Disodium Cocoyl Glutamate

Sodium Cocoyl Alaninate

Lauryl Betaine

Sodium Chloride

Cetyl Alcohol

Polyquaternium-10

Citric Acid

Sodium Salicylate

Pvp

Parfum

Caprylyl Glycol

Trihydroxystearin

Caprylic/Capric Triglyceride

Polyquaternium-6

Sodium Citrate

PPG-3 Caprylyl Ether

C10-18 Triglycerides

Vitis Vinifera Seed Oil

Dicaprylyl Ether

Sodium Metaphosphate

Ethylhexylglycerin

Piroctone Olamine

Anthemis Nobilis Flower Water

Glyceryl Stearate

Guar Hydroxypropyltrimonium Chloride

Sodium Benzoate

Macadamia Ternifolia Seed Oil

Dehydroacetic Acid

Hexyl Cinnamal

Propanediol

Zinc PCA

1,2-Hexanediol

Biotin

Tripeptide-13

Tocopherol

Sodium Hyaluronate

Laminaria Japonica Extract

Avena Sativa Peptide

Arginine

Serine

Glutamic Acid

Threonine

Leucine

Proline

Aspartic Acid

Isoleucine

Glycine

Soluble Collagen

Hydrolyzed Hyaluronic Acid

Phenylalanine

Alanine

Tyrosine

Lysine

Sodium Hyaluronate Crosspolymer

Histidine

Hyaluronic Acid

Caffeine

Panthenol

Niacinamide

Alcohol Denat.

PEG-150 Pentaerythrityl Tetrastearate

Hydrogenated Lecithin

Butylene Glycol

Cetearyl Alcohol

Valine

PPG-2 Hydroxyethyl Cocamide

Stearic Acid

Sodium Acetylated Hyaluronate

Ceramide NP

Phytosphingosine

Cholesterol

Hydrolyzed Vegetable Protein

Methionine

Ceramide Ns

Cystine

Ceramide AP

Ceramide EOP

Tryptophan

Ceramide As

Water, Sodium C14-16 Olefin Sulfonate, Glycerin, Disodium Laureth Sulfosuccinate, Cocamidopropyl Betaine, Caprylyl/Capryl Glucoside, Lauryl Hydroxysultaine, Disodium Cocoyl Glutamate, Sodium Cocoyl Alaninate, Lauryl Betaine, Sodium Chloride, Cetyl Alcohol, Polyquaternium-10, Citric Acid, Sodium Salicylate, Pvp, Parfum, Caprylyl Glycol, Trihydroxystearin, Caprylic/Capric Triglyceride, Polyquaternium-6, Sodium Citrate, PPG-3 Caprylyl Ether, C10-18 Triglycerides, Vitis Vinifera Seed Oil, Dicaprylyl Ether, Sodium Metaphosphate, Ethylhexylglycerin, Piroctone Olamine, Anthemis Nobilis Flower Water, Glyceryl Stearate, Guar Hydroxypropyltrimonium Chloride, Sodium Benzoate, Macadamia Ternifolia Seed Oil, Dehydroacetic Acid, Hexyl Cinnamal, Propanediol, Zinc PCA, 1,2-Hexanediol, Biotin, Tripeptide-13, Tocopherol, Sodium Hyaluronate, Laminaria Japonica Extract, Avena Sativa Peptide, Arginine, Serine, Glutamic Acid, Threonine, Leucine, Proline, Aspartic Acid, Isoleucine, Glycine, Soluble Collagen, Hydrolyzed Hyaluronic Acid, Phenylalanine, Alanine, Tyrosine, Lysine, Sodium Hyaluronate Crosspolymer, Histidine, Hyaluronic Acid, Caffeine, Panthenol, Niacinamide, Alcohol Denat., PEG-150 Pentaerythrityl Tetrastearate, Hydrogenated Lecithin, Butylene Glycol, Cetearyl Alcohol, Valine, PPG-2 Hydroxyethyl Cocamide, Stearic Acid, Sodium Acetylated Hyaluronate, Ceramide NP, Phytosphingosine, Cholesterol, Hydrolyzed Vegetable Protein, Methionine, Ceramide Ns, Cystine, Ceramide AP, Ceramide EOP, Tryptophan, Ceramide As

Sodium Lauroyl Methyl Isethionate

Cocamidopropyl Hydroxysultaine

Potassium Cocoyl Glycinate

Potassium Cocoate

Sodium Lauroyl Sarcosinate

Glycereth-26

Decyl Glucoside

Phenoxyethanol

Cocamidopropylamine Oxide

Sodium Cocoyl Glutamate

Glycol Distearate

Methyl Gluceth-20

Acrylates Copolymer

PEG-120 Methyl Glucose Dioleate

Amodimethicone

Sodium Lauryl Sulfoacetate

Divinyldimethicone/Dimethicone Copolymer

Chlorphenesin

Polyquaternium-11

C11-15 Pareth-7

Trisodium Ethylenediamine Disuccinate

Laureth-9

Trideceth-12

Hydrolyzed Vegetable Protein Pg-Propyl Silanetriol

C12-13 Pareth-3

C12-13 Pareth-23

Helianthus Annuus Seed Oil

Pseudozyma Epicola/Camellia Sinensis Seed Oil Ferment Extract Filtrate

Pseudozyma Epicola/Argania Spinosa Kernel Oil Ferment Filtrate

Prunus Armeniaca Kernel Oil

Quaternium-95

Helianthus Annuus Seed Extract

PEG-8

Bis-Aminopropyl Diglycol Dimaleate

Euterpe Oleracea Fruit Extract

Rosmarinus Officinalis Leaf Extract

Punica Granatum Extract

Origanum Vulgare Leaf Extract

Musa Sapientum Fruit Extract

Morinda Citrifolia Fruit Extract

PEG-8/Smdi Copolymer

Arctium Lappa Root Extract

Sodium Polyacrylate

Palmitoyl Myristyl Serinate

Citral

Limonene

Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate

Water, Sodium Lauroyl Methyl Isethionate, Cocamidopropyl Hydroxysultaine, Potassium Cocoyl Glycinate, Disodium Cocoyl Glutamate, Potassium Cocoate, Sodium Lauroyl Sarcosinate, Glycereth-26, Decyl Glucoside, Parfum, Phenoxyethanol, Cocamidopropylamine Oxide, Sodium Cocoyl Glutamate, Glycol Distearate, Disodium Laureth Sulfosuccinate, Methyl Gluceth-20, Acrylates Copolymer, PEG-120 Methyl Glucose Dioleate, Amodimethicone, Polyquaternium-10, Citric Acid, Ethylhexylglycerin, Sodium Lauryl Sulfoacetate, Divinyldimethicone/Dimethicone Copolymer, Chlorphenesin, Polyquaternium-11, Guar Hydroxypropyltrimonium Chloride, C11-15 Pareth-7, Trisodium Ethylenediamine Disuccinate, Laureth-9, Glycerin, Trideceth-12, Panthenol, Hydrolyzed Vegetable Protein Pg-Propyl Silanetriol, C12-13 Pareth-3, C12-13 Pareth-23, Helianthus Annuus Seed Oil, Tocopherol, Pseudozyma Epicola/Camellia Sinensis Seed Oil Ferment Extract Filtrate, Pseudozyma Epicola/Argania Spinosa Kernel Oil Ferment Filtrate, Prunus Armeniaca Kernel Oil, Quaternium-95, Propanediol, Helianthus Annuus Seed Extract, PEG-8, Bis-Aminopropyl Diglycol Dimaleate, Euterpe Oleracea Fruit Extract, Rosmarinus Officinalis Leaf Extract, Punica Granatum Extract, Origanum Vulgare Leaf Extract, Musa Sapientum Fruit Extract, Morinda Citrifolia Fruit Extract, Sodium Hyaluronate, PEG-8/Smdi Copolymer, Arctium Lappa Root Extract, Sodium Polyacrylate, Palmitoyl Myristyl Serinate, Citral, Hexyl Cinnamal, Limonene, Biotin, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate

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Alternatives

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Biotin is a B vitamin that is naturally produced by our bodies. It is also called Vitamin H.

Our bodies use biotin in the metabolism process. It also helps our bodies use enzymes and move nutrients around. A biotin deficiency can lead to brittle hair and nails.

More research is needed on applying biotin topically. However, taking biotin orally has been shown to help nourish the skin, hair, and nails. They play a role in forming skin-hydrating fatty acids.

Biotin is water-soluble. It can be found in foods such as fish, eggs, dairy, nuts, and meat. Vitamin H stands for "haar" and "haut". These are the German words for hair and skin.

Citric Acid is an alpha hydroxy acid (AHA) naturally found in citrus fruits like oranges, lemons, and limes.

Like other AHAs, citric acid can exfoliate skin by breaking down the bonds that hold dead skin cells together. This helps reveal smoother and brighter skin underneath.

However, this exfoliating effect only happens at high concentrations (20%) which can be hard to find in cosmetic products.

Due to this, citric acid is usually included in small amounts as a pH adjuster. This helps keep products slightly more acidic and compatible with skin's natural pH.

In skincare formulas, citric acid can:

While it can provide some skin benefits, research shows lactic acid and glycolic acid are generally more effective and less irritating exfoliants.

Most citric acid used in skincare today is made by fermenting sugars (usually from molasses). This synthetic version is identical to the natural citrus form but easier to stabilize and use in formulations.

Rosacea skin has a lower threshold for acids generally, with 62.5% of rosacea subjects in one study reacting to lactic acid in a sting test. This is why we mark citric acid as a potential rosacea trigger.

However, this ingredient shows up as a pH adjuster or chelator at roughly 0.1-1% in many products. These low levels are unlikely to be an issue for rosacea skin and becomes a potential trigger at exfoliating concentrations (20%). Because everybody's skin is unique, we recommend a patch test if you are unsure.

We don't have a description for Disodium Cocoyl Glutamate yet.

This ingredient is a cleansing agent, surfactant, and foam booster. It considered an alternative to traditional sulfates (Sulfosuccinate) and is allowed in "sulfate-free" products.

According to a manufacturer, this ingredient is mild and can be used in baby and bath options.

Ethylhexylglycerin is created from glycerin. It is a multitasker ingredient that:

The CIR Expert Panel found minimal skin absorption or sensitization of any kind in a safety assessment. Though this ingredient is considered well-tolerated, a small number of cases of allergic dermatitis have been published since 2002. Just be sure to patch test if you are unsure.

Industry-reported use ranges from 8% in rinse-off products and 2% in leave-on formulations.

Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.

Topically, glycerin does several things at once:

Your skin makes glycerin on its own (mostly from sebaceous oil breakdown) and shuttles it to your outermost layer of skin, or your epidermis, via aquaporin-3.

Aquaporin-3 is a transporter that is essential for normal skin hydration, elasticity, and repair. Interestingly, mice lacking in AQP3 have dry and less elastic skin that can be fully corrected with glycerin.

This ingredient is non-irritating, plays well with almost every ingredient, and works across all skin types. Typical use is anywhere between 3-10% but can go up to 79% in some leave-on products.

Just know very high concentrations (>40%) can feel tacky in low humidity.

Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.

This ingredient is derived from guar gum. It is a skin conditioning agent that creates a thin, breathable film to reduce water loss during cleansing.

This leaves the skin feeling soft rather than stripped and also contributes to a creamier lather.

Due to the large molecule size, this ingredient is unlikely to penetrate skin.

Hexyl Cinnamal is a fragrance ingredient with a similar scent to jasmine. It can be naturally found in chamomile essential oil.

This ingredient is a known EU allergen and may sensitize the skin. The EU requires this ingredient to be listed separately on an ingredients list.

Hexyl Cinnamal is not water soluble but is soluble in oils.

Panthenol is a common ingredient that helps hydrate and soothe the skin. It is found naturally in our skin and hair.

There are two forms of panthenol: D and L.

D-panthenol is also known as dexpanthenol. Most cosmetics use dexpanthenol or a mixture of D and L-panthenol.

Panthenol is famous due to its ability to go deeper into the skin's layers. Using this ingredient has numerous pros (and no cons):

Like hyaluronic acid, panthenol is a humectant. Humectants are able to bind and hold large amounts of water to keep skin hydrated.

This ingredient works well for wound healing. It works by increasing tissue in the wound and helps close open wounds.

Once oxidized, panthenol converts to pantothenic acid. Panthothenic acid is found in all living cells.

This ingredient is also referred to as pro-vitamin B5.

Parfum is a catch-all term for an ingredient or more that is used to give a scent to products.

Also called "fragrance", this ingredient can be a blend of hundreds of chemicals or plant oils. This means every product with "fragrance" or "parfum" in the ingredients list is a different mixture.

For instance, Habanolide is a proprietary trade name for a specific aroma chemical. When used as a fragrance ingredient in cosmetics, most aroma chemicals fall under the broad labeling category of “FRAGRANCE” or “PARFUM” according to EU and US regulations.

The term 'parfum' or 'fragrance' is not regulated in many countries. In many cases, it is up to the brand to define this term.

For instance, many brands choose to label themselves as "fragrance-free" because they are not using synthetic fragrances. However, their products may still contain ingredients such as essential oils that are considered a fragrance by INCI standards.

One example is Calendula flower extract. Calendula is an essential oil that still imparts a scent or 'fragrance'.

Depending on the blend, the ingredients in the mixture can cause allergies and sensitivities on the skin. Some ingredients that are known EU allergens include linalool and citronellol.

Parfum can also be used to mask or cover an unpleasant scent.

The bottom line is: not all fragrances/parfum/ingredients are created equally. If you are worried about fragrances, we recommend taking a closer look at an ingredient. And of course, we always recommend speaking with a professional.

Polyquaternium-10 is an ammonium salt of hydroxyethylcellulose. It is a white and granular powder used as a film-former and anti-static agent.

This ingredient is commonly found in hair conditioning products. According to a manufacturer, its positive charge makes it great for absorbing hair proteins. The manufacturer also states this ingredient helps with curl retention.

For haircare friends: this ingredient is not a silicone.

Propanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.

It’s often used to:

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.

Sodium Hyaluronate is the salt form of hyaluronic acid. It is a long sugar chain that is naturally found in your skin, joints, and connective tissue that maintains hydration and elasticity.

In skincare, it works as a humectant. It pulls water from the environment and deeper layers of skin and binds it to the surface.

Interestingly, the size of the molecule affects its behavior:

Some clinical evidence links low molecular weight versions to improved wrinkle depth, elasticity, anti-inflammatory effects, and barrier repair.

Many serums use a blend of both weights so you can get surface hydration plus longer-lasting and deeper effects.

You'll typically see concentrations between 0.1-2% for this ingredient.

Tocopherol is a fat-soluble antioxidant known as Vitamin E.

You'll find this ingredient in the vast majority of skincare (for good reason). It works to neutralize free radicals, or unstable molecules generated by UV exposure, pollution, and other environmental stressors, before they can cause oxidative damage to your skin cells.

Topically applied tocopherol has been shown to protect against UV damage by ramping up the skin's own natural defense enzymes.

It also acts as a skin conditioning agent; some studies show that regular topical use can improve the skin's water-binding capacity over 2-4 weeks.

This ingredient is especially loved for being a team player. When combined with Vitamin C, the photoprotective effect of both ingredients roughly doubles and the combo also helps reduce UV-induced DNA damage.

This ingredient has some brightening potential but it's more of a prevention ingredient than spot-fader. Cell studies show it can slow down melanin production but it's worth noting that it's not the most powerful brightener out there.

In formulations, it also serves as a stabilizer that helps protect other oxidation-prone ingredients from degrading.

Concentrations usually range from 0.1-1% in most leave-on products.

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. Remember to stay hydrated!

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