Olaplex No. 4C Bond Maintenance Clarifying Shampoo Versus Laperas Keratin & Collagen Hair Defense Shampoo

Olaplex No. 4C Bond Maintenance Clarifying Shampoo Versus Laperas Keratin & Collagen Hair Defense Shampoo

What's inside

Key Ingredients

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Benefits

Concerns

Ingredients Side-by-side

Water

Sodium Lauroyl Methyl Isethionate

Cocamidopropyl Hydroxysultaine

Sodium Lauroyl Glutamate

Coco-Betaine

Disodium Laureth Sulfosuccinate

Acrylates Copolymer

Cocamidopropyl Betaine

Cocamidopropylamine Oxide

Sodium Methyl Oleoyl Taurate

Decyl Glucoside

Bis-Aminopropyl Diglycol Dimaleate

Sodium Lauryl Sulfoacetate

Phenoxyethanol

Coco-Glucoside

Lauryl Glucoside

Chlorphenesin

Panthenol

Trisodium Ethylenediamine Disuccinate

Diethylhexyl Succinate

Sodium Benzoate

Polyquaternium-11

Benzoic Acid

Sodium PCA

Pentasodium Triphosphate

Sodium Lactate

Arginine

Aspartic Acid

PCA

Citric Acid

Glycine

Alanine

Serine

Valine

Isoleucine

Proline

Threonine

Histidine

Phenylalanine

Parfum

Citral

Hexyl Cinnamal

Limonene

Water, Sodium Lauroyl Methyl Isethionate, Cocamidopropyl Hydroxysultaine, Sodium Lauroyl Glutamate, Coco-Betaine, Disodium Laureth Sulfosuccinate, Acrylates Copolymer, Cocamidopropyl Betaine, Cocamidopropylamine Oxide, Sodium Methyl Oleoyl Taurate, Decyl Glucoside, Bis-Aminopropyl Diglycol Dimaleate, Sodium Lauryl Sulfoacetate, Phenoxyethanol, Coco-Glucoside, Lauryl Glucoside, Chlorphenesin, Panthenol, Trisodium Ethylenediamine Disuccinate, Diethylhexyl Succinate, Sodium Benzoate, Polyquaternium-11, Benzoic Acid, Sodium PCA, Pentasodium Triphosphate, Sodium Lactate, Arginine, Aspartic Acid, PCA, Citric Acid, Glycine, Alanine, Serine, Valine, Isoleucine, Proline, Threonine, Histidine, Phenylalanine, Parfum, Citral, Hexyl Cinnamal, Limonene

Sodium Laureth Sulfate

Sodium C14-16 Olefin Sulfonate

Cocamide DEA

Panax Notoginseng Root Extract

Aesculus Hippocastanum Seed Extract

Salix Alba Bark Extract

Panicum Miliaceum Seed Extract

Chamomilla Recutita Flower Extract

Camellia Sinensis Leaf Extract

Humulus Lupulus Extract

Ginkgo Biloba Leaf Extract

Salvia Officinalis Leaf Extract

Aloe Barbadensis Leaf Juice

Panax Ginseng Root Extract

Ruscus Aculeatus Root Extract

Arctium Lappa Root Extract

Urtica Dioica Leaf Extract

Capsicum Frutescens Fruit Extract

Equisetum Arvense Extract

Lawsonia Inermis Extract

Betula Alba Leaf Extract

Polyquaternium-39

Glycerin

Cocamide Mea

Glycol Distearate

Amodimethicone

Trideceth-12

C11-15 Pareth-7

Laureth-9

Propylene Glycol

C12-13 Alkyl Lactate

Laureth-10

Trideceth-6

Silicone Quaternium-18

Sodium Chloride

Hydrolyzed Keratin

Hydrolyzed Collagen

Hydrolyzed Wheat Protein

Hydrolyzed Soy Protein

Hydrolyzed Corn Protein

Caffeine

Niacinamide

Allium Sativum Bulb Extract

Saccharomyces/Allium Sativum Bulb Ferment Filtrate

Biotin

Niacin

Oligopeptide-79

Laminaria Digitata Extract

Sophora Angustifolia Root Extract

Polyquaternium-10

Piroctone Olamine

Magnesium Chloride

Magnesium Nitrate

Sodium Carrageenan

Potassium Sorbate

Calcium Pantothenate

Salicylic Acid

EDTA

Leptospermone

Isoleptospermone

Sea Salt

Silica

Vanillyl Butyl Ether

Methylpropanediol

Polysorbate 80

Pyridoxine

Flavesone

Methylchloroisothiazolinone

Methylisothiazolinone

Water, Sodium Laureth Sulfate, Cocamidopropyl Betaine, Sodium C14-16 Olefin Sulfonate, Lauryl Glucoside, Cocamide DEA, Panax Notoginseng Root Extract, Aesculus Hippocastanum Seed Extract, Salix Alba Bark Extract, Panicum Miliaceum Seed Extract, Chamomilla Recutita Flower Extract, Camellia Sinensis Leaf Extract, Humulus Lupulus Extract, Ginkgo Biloba Leaf Extract, Salvia Officinalis Leaf Extract, Aloe Barbadensis Leaf Juice, Panax Ginseng Root Extract, Ruscus Aculeatus Root Extract, Arctium Lappa Root Extract, Urtica Dioica Leaf Extract, Capsicum Frutescens Fruit Extract, Equisetum Arvense Extract, Lawsonia Inermis Extract, Betula Alba Leaf Extract, Polyquaternium-39, Glycerin, Cocamide Mea, Glycol Distearate, Amodimethicone, Trideceth-12, C11-15 Pareth-7, Laureth-9, Propylene Glycol, C12-13 Alkyl Lactate, Laureth-10, Trideceth-6, Sodium Lactate, Silicone Quaternium-18, Sodium Chloride, Parfum, Panthenol, Hydrolyzed Keratin, Hydrolyzed Collagen, Hydrolyzed Wheat Protein, Hydrolyzed Soy Protein, Hydrolyzed Corn Protein, Caffeine, Niacinamide, Allium Sativum Bulb Extract, Saccharomyces/Allium Sativum Bulb Ferment Filtrate, Biotin, Niacin, Oligopeptide-79, Laminaria Digitata Extract, Sophora Angustifolia Root Extract, Polyquaternium-10, Piroctone Olamine, Citric Acid, Magnesium Chloride, Magnesium Nitrate, Sodium Carrageenan, Potassium Sorbate, Calcium Pantothenate, Salicylic Acid, EDTA, Leptospermone, Isoleptospermone, Sea Salt, Silica, Vanillyl Butyl Ether, Methylpropanediol, Phenoxyethanol, Polysorbate 80, Sodium Benzoate, Pyridoxine, Flavesone, Methylchloroisothiazolinone, Methylisothiazolinone

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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.

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.

Cocamidopropyl Betaine is a fatty acid created by mixing similar compounds in coconut oil and dimethylaminopropylamine, a compound with two amino groups.

This ingredient is a surfactant and cleanser. It helps gather the dirt, pollutants, and other impurities in your skin to be washed away. It also helps thicken a product and make the texture more creamy.

Being created from coconut oil means Cocamidopropyl Betaine is hydrating for the skin.

While Cocamidopropyl Betaine was believed to be an allergen, a study from 2012 disproved this. It found two compounds in unpure Cocamidopropyl Betaine to be the irritants: aminoamide and 3-dimethylaminopropylamine. High-grade and pure Cocamidopropyl Betaine did not induce allergic reactions during this study.

Lauryl Glucoside sugar- and lipid-based cleansing agent. It is created from glucose and lauryl alcohol.

This ingredient is a surfactant, making it easier to rinse oil, dirt, and other pollutants away.

A British study found lauryl glucoside to cause skin sensitivity for some people. We recommend speaking with a professional if you have concerns.

Other names for this ingredient include "Lauryl Polyglucose", "Lauryl glycoside", and "D-Glucopyranoside".

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.

Phenoxyethanol is one of the most widely used preservatives in skincare (and for good reason!).

It has a large spectrum of antimicrobial activity and especially effective bacteria, yeast, and mold while only having a weak effect on your skin's natural microbiome.

On a cellular level, it disrupts the cell membranes of microbes by poking holes that make the cell leak. This shuts down the chemical reactions the microbe needs to make energy so it can no longer survive.

Another perk of this ingredient is that it stays functional across a wide pH range (3-10).

You'll often see it paired with boosters like Ethylhexylglycerin; one study showed that a 1:9 ratio of Ethylhexylglycerin to Phenoxyethanol damages bacterial membranes as effectively as doubling the Phenoxyethanol concentration on its own.

Typical use concentrations range from 0.3-1% depending on the formula, and this ingredient is capped at 1% int the EU.

Safety-wise, the fear mongering does not hold up to the evidence. The EU's Scientific Committee on Consumer Safety and FDA consider it safe as a preservative at up to 1%, including for children of all ages.

Adverse systemic effects only showed up in animal studies at exposures roughly 200x higher than what people get from cosmetics. And despite its very widespread use, this ingredient is a rare sensitizer and allergic reactions are uncommon.

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.

It 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.

Sodium Lactate is the sodium salt of lactic acid, an AHA. It is a humectant and sometimes used to adjust the pH of a product.

This ingredient is part of our skin's NMF, or natural moisturizing factor. Our NMF is essential for the hydration of our top skin layers and plasticity of skin. NMF also influences our skin's natural acid mantle and pH, which protects our skin from harmful bacteria.

High percentages of Sodium Lactate can have an exfoliating effect.

Fun fact: Sodium Lactate is produced from fermented sugar.

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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