REDKEN Extreme Shampoo Versus Elizavecca Cer-100 Collagen Coating Hair Muscle Shampoo

REDKEN Extreme Shampoo Versus Elizavecca Cer-100 Collagen Coating Hair Muscle Shampoo

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Sodium Laureth Sulfate

Coco-Betaine

Glycol Distearate

Sodium Chloride

Dimethicone

Parfum

Cocamide Mipa

Sodium Benzoate

Hexylene Glycol

Salicylic Acid

Guar Hydroxypropyltrimonium Chloride

Carbomer

Cetyl Alcohol

Sodium Cocoyl Amino Acids

Behentrimonium Methosulfate

Quaternium-33

Potassium Dimethicone PEG-7 Panthenyl Phosphate

Benzyl Benzoate

Sodium Sarcosinate

Propylene Glycol

Limonene

Benzyl Alcohol

Arginine

2-Oleamido-1,3-Octadecanediol

Hydrolyzed Soy Protein

Linalool

Fumaric Acid

Hydrolyzed Vegetable Protein Pg-Propyl Silanetriol

Phenoxyethanol

Tetrasodium EDTA

Potassium Sorbate

Sodium Hydroxide

Citric Acid

Water, Sodium Laureth Sulfate, Coco-Betaine, Glycol Distearate, Sodium Chloride, Dimethicone, Parfum, Cocamide Mipa, Sodium Benzoate, Hexylene Glycol, Salicylic Acid, Guar Hydroxypropyltrimonium Chloride, Carbomer, Cetyl Alcohol, Sodium Cocoyl Amino Acids, Behentrimonium Methosulfate, Quaternium-33, Potassium Dimethicone PEG-7 Panthenyl Phosphate, Benzyl Benzoate, Sodium Sarcosinate, Propylene Glycol, Limonene, Benzyl Alcohol, Arginine, 2-Oleamido-1,3-Octadecanediol, Hydrolyzed Soy Protein, Linalool, Fumaric Acid, Hydrolyzed Vegetable Protein Pg-Propyl Silanetriol, Phenoxyethanol, Tetrasodium EDTA, Potassium Sorbate, Sodium Hydroxide, Citric Acid

Lauryl Betaine

Disodium Laureth Sulfosuccinate

Glycerin

Dipropylene Glycol

PEG-12 Dimethicone

Polyquaternium-10

Sodium Cocoyl Glutamate

Polyquaternium-67

PEG-12 Allyl Ether

1,2-Hexanediol

Caprylyl Glycol

Butylene Glycol

Disodium Cocoyl Glutamate

Polyquaternium-11

Illicium Verum Fruit Extract

Disodium EDTA

Polyquaternium-7

Ceramide NP

Hydrolyzed Collagen

Decyl Glucoside

Gelatin

Hydrolyzed Keratin

Avena Sativa Protein Extract

Hydrolyzed Corn Protein

Hydrolyzed Wheat Protein

Moringa Oleifera Seed Extract

Propolis Extract

Salix Alba Bark Extract

Origanum Vulgare Leaf Extract

Chamaecyparis Obtusa Leaf Extract

Lactobacillus/Soybean Ferment Extract

Cinnamomum Cassia Bark Extract

Scutellaria Baicalensis Root Extract

Portulaca Oleracea Extract

Beta-Glucan

Water, Lauryl Betaine, Disodium Laureth Sulfosuccinate, Glycerin, Sodium Chloride, Dipropylene Glycol, PEG-12 Dimethicone, Polyquaternium-10, Sodium Cocoyl Glutamate, Polyquaternium-67, Parfum, PEG-12 Allyl Ether, Citric Acid, 1,2-Hexanediol, Caprylyl Glycol, Butylene Glycol, Disodium Cocoyl Glutamate, Polyquaternium-11, Sodium Benzoate, Illicium Verum Fruit Extract, Disodium EDTA, Polyquaternium-7, Ceramide NP, Hydrolyzed Collagen, Decyl Glucoside, Gelatin, Hydrolyzed Keratin, Avena Sativa Protein Extract, Hydrolyzed Corn Protein, Hydrolyzed Soy Protein, Hydrolyzed Wheat Protein, Moringa Oleifera Seed Extract, Propolis Extract, Salix Alba Bark Extract, Origanum Vulgare Leaf Extract, Chamaecyparis Obtusa Leaf Extract, Lactobacillus/Soybean Ferment Extract, Cinnamomum Cassia Bark Extract, Scutellaria Baicalensis Root Extract, Portulaca Oleracea Extract, Beta-Glucan

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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.

Hydrolyzed Soy Protein is a water-soluble blend of peptides and amino acids made by breaking down the protein from soybeans into smaller proteins.

It's the most widely used hydrolyzed vegetable protein in cosmetics and it acts mainly as a skin and hair conditioning agent.

The smaller fragments are water-loving so it forms a thin, moisture-retentive film on skin that helps reduce water loss and leaves things feeling softer and smoother.

You'll often see it credited with "firming" or "anti-aging" benefits as well; this claim traces back to lab research like Tokudome et al. (2012). This study added low-molecular-weight soybean peptides to cultured human skin fibroblasts and saw increased type I collagen gene expression + collagen content.

The caveat is that this is in-vitro and oral-peptide research so the only solid, well-established role for the topical ingredient is skin conditioning.

Typical use concentrations go up to 3.5% in mascara but this ingredient is typically used at low levels well under 1%.

It has a reassuring safety profile as well; it's not a skin irritant in testing up to 20% and has limited skin penetration due to its large size and water-loving nature.

Anyone with a known soy allergy should definitely patch test or skip this ingredient. There's also a single case of a soy-containing product aggravating rosacea via protein contact dermatitis, but this is very rare.

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.

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.

Chances are, you eat sodium chloride every day. Sodium Chloride is also known as table salt. This ingredient has many purposes in skincare: thickener, emulsifier, and exfoliator.

You'll most likely find this ingredient in cleansers where it is used to create a gel-like texture. As an emulsifier, it also prevents ingredients from separating.

You might see people debate whether Sodium Chloride is comedogenic, but there actually haven't been any comedogenic tests done on it. Either way, the overall formulation of a product matters a lot more than any single ingredient.

You might see this ingredient used in scrubs as a primary exfoliating ingredient.

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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