Collagen & Peptide NutritionNutrition and collagen guides

Nutrition guide

L'Oreal Dream Length No Haircut Cream Versus Elizavecca Milky Piggy CER-100 Collagen Ceramide Coating Protein Treatment

L'Oreal Dream Length No Haircut Cream Versus Elizavecca Milky Piggy CER-100 Collagen Ceramide Coating Protein Treatment What's inside Key Ingredients Benefits Concerns Ingredients Side-by-side Water Cyclopentasiloxane Propylene Glycol Triethanolamine Niacinami

L'Oreal Dream Length No Haircut Cream Versus Elizavecca Milky Piggy CER-100 Collagen Ceramide Coating Protein Treatment

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Cyclopentasiloxane

Propylene Glycol

Triethanolamine

Niacinamide

Ricinus Communis Seed Oil

Hydroxypropyl Guar

Hydrolyzed Wheat Protein

Hydroxycitronellal

Hydrolyzed Corn Protein

Hydrolyzed Soy Protein

Hydroxypropyltrimonium Hydrolyzed Wheat Protein

Phenoxyethanol

PEG/PPG-17/18 Dimethicone

Behentrimonium Chloride

Trideceth-6

Polyquaternium-4

Dimethiconol

Limonene

Panthenol

Benzyl Salicylate

Linalool

Benzyl Alcohol

Amodimethicone

Isopropyl Alcohol

Caprylyl Glycol

Alpha-Isomethyl Ionone

Carbomer

Geraniol

Potato Starch Modified

Citronellol

Cetrimonium Chloride

Coumarin

Hexyl Cinnamal

Parfum

Water, Cyclopentasiloxane, Propylene Glycol, Triethanolamine, Niacinamide, Ricinus Communis Seed Oil, Hydroxypropyl Guar, Hydrolyzed Wheat Protein, Hydroxycitronellal, Hydrolyzed Corn Protein, Hydrolyzed Soy Protein, Hydroxypropyltrimonium Hydrolyzed Wheat Protein, Phenoxyethanol, PEG/PPG-17/18 Dimethicone, Behentrimonium Chloride, Trideceth-6, Polyquaternium-4, Dimethiconol, Limonene, Panthenol, Benzyl Salicylate, Linalool, Benzyl Alcohol, Amodimethicone, Isopropyl Alcohol, Caprylyl Glycol, Alpha-Isomethyl Ionone, Carbomer, Geraniol, Potato Starch Modified, Citronellol, Cetrimonium Chloride, Coumarin, Hexyl Cinnamal, Parfum

Cetearyl Alcohol

Glycerin

Citric Acid

Sodium Benzoate

Dimethicone

Trideceth-12

Tocopheryl Acetate

Caramel

Butylene Glycol

Cornus Officinalis Fruit Extract

Rehmannia Glutinosa Root Extract

Dioscorea Japonica Root Extract

Alisma Orientale Tuber Extract

Paeonia Suffruticosa Root Extract

Poria Cocos Sclerotium Extract

Ceramide NP

Alcohol

Hydrolyzed Silk

Hydrolyzed Collagen

Gelatin

Hydrolyzed Keratin

Avena Sativa Kernel Extract

1,2-Hexanediol

Daucus Carota Sativa Root Extract

Brassica Oleracea Italica Extract

Apium Graveolens Extract

Brassica Oleracea Capitata Leaf Extract

Oryza Sativa Extract

Brassica Rapa Leaf Extract

Ethylhexylglycerin

Solanum Lycopersicum Fruit/Leaf/Stem Extract

Water, Cetearyl Alcohol, Behentrimonium Chloride, Glycerin, Amodimethicone, Cyclopentasiloxane, Citric Acid, Isopropyl Alcohol, Cetrimonium Chloride, Sodium Benzoate, Dimethicone, Trideceth-12, Panthenol, Parfum, Tocopheryl Acetate, Caramel, Butylene Glycol, Cornus Officinalis Fruit Extract, Rehmannia Glutinosa Root Extract, Dioscorea Japonica Root Extract, Alisma Orientale Tuber Extract, Paeonia Suffruticosa Root Extract, Poria Cocos Sclerotium Extract, Ceramide NP, Alcohol, Hydrolyzed Silk, Hydrolyzed Collagen, Gelatin, Hydrolyzed Keratin, Avena Sativa Kernel Extract, 1,2-Hexanediol, Hydrolyzed Wheat Protein, Hydrolyzed Corn Protein, Hydrolyzed Soy Protein, Phenoxyethanol, Daucus Carota Sativa Root Extract, Brassica Oleracea Italica Extract, Apium Graveolens Extract, Brassica Oleracea Capitata Leaf Extract, Oryza Sativa Extract, Brassica Rapa Leaf Extract, Ethylhexylglycerin, Solanum Lycopersicum Fruit/Leaf/Stem Extract

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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.

This water-soluble silicone is used for its hydrating and softening properties. It is used to add a silky feel to skincare products and has great benefits for haircare.

In haircare, this ingredient:

Adds shine

Protects color

Offers thermal protection

Boosts hair strength

Does not build up as easily

This ingredient is a preservative and often used for it's anti-static properties. You'll most likely see this ingredient in hair conditioners.

It does not cause irritation or sensitization in leave-on products at 1-5%.

This ingredient is a preservative, antimicrobial, and emulsifier. It is often used in cosmetics for its ability to cleanse, condition, and reduce static.

Cetrimonium chloride is a quaternary ammonium salt, meaning it has a water-soluble structure.

Cyclopentasiloxane (D5) is a lightweight silicone that mostly acts as an emollient and solvent in cosmetics. Its the reason your products feel silky, fast-spreading, and non-greasy.

Since D5 is volatile, it does its thing and then evaporates off the skin quickly.

The safety profile of this ingredient is reassuring; the US CIR Expert Panel concluded D5 is safe as used in cosmetics and Health Canada concluded that D5 is not harmful to human health or the environment as currently used in cosmetics

There's a study that people mention about D5 in a rat study showing tumors. This study is related to long-term inhalation of high D5 levels.

Regulatory bodies have judged this study to be not applicable in topical skincare since skin absorption of D5 is very low and we're not really inhaling huge amounts of D5.

The only restriction for this ingredient is environmental. The European Chemicals Agency (ECHA) restricted D5 in wash-off cosmetics at or above 0.1% due to their persistence in water.

We don't have a description for Hydrolyzed Corn Protein yet.

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.

This ingredient is a plant-derived protein made by breaking down wheat proteins into smaller amino acids and peptides. It has skin and hair conditioning properties.

People with known wheat allergy or a history of immediate reactions should be cautious with leave-on products containing hydrolyzed wheat proteins.

Isopropyl Alcohol is more commonly known as rubbing alcohol. It is most commonly used as a solvent, meaning it helps other ingredients dissolve.

This ingredient is an astringent alcohol. Astringent alcohols may also irritate skin as they high amounts may strip away your skin's natural oils.

Other types of astringent alcohols include:

According to the National Rosacea Society based in the US, you should be mindful of products with these alcohols in the top half of ingredients.

Any type of sanitizing product will have high amounts of alcohol to help kill bacteria and viruses.

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.

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!

Similar Comparisons

SUPPLEMENTAL FIELD FILE

Notes to carry forward.

Source-derived references linked through this guide’s public topic markers.

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REFERENCE CARDS

Ingredients, lists & structured values

INGREDIENT LIST

Ingredients Explained

  • These ingredients are found in both products.
  • Ingredients higher up in an ingredient list are typically present in a larger amount.
  • This ingredient is a preservative and often used for it's anti-static properties. You'll most likely see this ingredient in hair conditioners.
  • It does not cause irritation or sensitization in leave-on products at 1-5%.
  • Cetearyl alcohol is a waxy mixture of two fatty alcohols: cetyl alcohol and stearyl alcohol. It is an emollient and emulsifier.
  • Despite having "alcohol" in its name, it has nothing to do with drying solvent alcohols; the FDA also allows "alcohol-free" products to contain fatty alcohols like this ingredient.
  • It plays several roles in a formula:
  • Typical use levels for this ingredient sit around 1-10% and the Cosmetic Ingredient Review Expert Panel has affirmed safety at concentrations up to 25% in leave-on products.
  • Multiple assessments have found it to be non-irritating and non-sensitizing to most people.
  • However, there have been some cases of allergic contact dermatitis in patients with chronically compromised skin barriers.
  • Cetearyl alcohol has a comedogenic rating of 2 and irritancy rating of 1. Both of these numbers come from the 1989 study that used rabbit ears; a "2" means mildly comedogenic and a "1" means low irritancy.
  • Here's the catch: rabbit skin is more sensitive than human skin and throws a lot of false positives. A 1996 reappraisal found that ingredients rated 1-2 in the rabbit ear tests are generally safe for humans.
  • Remember comedogenic ratings are unable to assess the entire formula of a product or how it will react on your skin. Just be sure to patch test if you are unsure about certain ingredients.
  • This ingredient is not fungal acne safe. Cetearyl alcohol is a fatty alcohol with chain lengths that fall within the range that Malassezia can metabolize.
  • A 2019 study has also observed Malassezia growth in the presence of this ingredient, confirming it to be not-fungal acne safe.
  • 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.
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PROVISION SHELF

Products & side-by-side records