Collagen & Peptide NutritionNutrition and collagen guides

Nutrition guide

Kundal Ultra Serum Versus Elizavecca Cer-100 Collagen Coating Hair A+ Muscle Curl Cream

Kundal Ultra Serum Versus Elizavecca Cer-100 Collagen Coating Hair A+ Muscle Curl Cream What's inside Key Ingredients No key ingredients Benefits Concerns Ingredients Side-by-side Cyclopentasiloxane Dimethicone Cyclohexasiloxane Isododecane Isopropyl Myristate

Kundal Ultra Serum Versus Elizavecca Cer-100 Collagen Coating Hair A+ Muscle Curl Cream

What's inside

Key Ingredients

No key ingredients

Benefits

Concerns

Ingredients Side-by-side

Cyclopentasiloxane

Dimethicone

Cyclohexasiloxane

Isododecane

Isopropyl Myristate

Macadamia Ternifolia Seed Oil

Amodimethicone

Squalane

Vegetable Oil

Isopropyl Palmitate

Tocopheryl Acetate

Argania Spinosa Kernel Oil

Carthamus Tinctorius Seed Oil

Helianthus Annuus Seed Oil

Persea Gratissima Oil

Vitis Vinifera Seed Oil

Camellia Japonica Seed Oil

Oryza Sativa Bran Oil

Prunus Amygdalus Dulcis Oil

Prunus Armeniaca Kernel Oil

Simmondsia Chinensis Seed Oil

Ricinus Communis Seed Oil

Limnanthes Alba Seed Oil

Sesamum Indicum Seed Oil

Plukenetia Volubilis Seed Oil

Tocopherol

Parfum

Cyclopentasiloxane, Dimethicone, Cyclohexasiloxane, Isododecane, Isopropyl Myristate, Macadamia Ternifolia Seed Oil, Amodimethicone, Squalane, Vegetable Oil, Isopropyl Palmitate, Tocopheryl Acetate, Argania Spinosa Kernel Oil, Carthamus Tinctorius Seed Oil, Helianthus Annuus Seed Oil, Persea Gratissima Oil, Vitis Vinifera Seed Oil, Camellia Japonica Seed Oil, Oryza Sativa Bran Oil, Prunus Amygdalus Dulcis Oil, Prunus Armeniaca Kernel Oil, Simmondsia Chinensis Seed Oil, Ricinus Communis Seed Oil, Limnanthes Alba Seed Oil, Sesamum Indicum Seed Oil, Plukenetia Volubilis Seed Oil, Tocopherol, Parfum

Water

Propylene Glycol

Glycerin

Pvp

Polyacrylamide

Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

C13-14 Isoparaffin

Tromethamine

1,2-Hexanediol

Caprylyl Glycol

Butylene Glycol

Laureth-7

Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

Isohexadecane

Illicium Verum Fruit Extract

Phenoxyethanol

Polysorbate 80

Disodium EDTA

Oenothera Biennis Oil

Chamomilla Recutita Flower Oil

Sorbitan Oleate

Cyclomethicone

Hydrolyzed Collagen

Gelatin

Hydrolyzed Keratin

Avena Sativa Protein Extract

Rosmarinus Officinalis Leaf Extract

Lavandula Angustifolia Flower Extract

Thymus Vulgaris Flower/Leaf/Stem Extract

Origanum Vulgare Extract

Hydrolyzed Corn Protein

Hydrolyzed Wheat Protein

Hydrolyzed Soy Protein

Water, Propylene Glycol, Cyclopentasiloxane, Dimethicone, Glycerin, Pvp, Polyacrylamide, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Parfum, C13-14 Isoparaffin, Tromethamine, 1,2-Hexanediol, Caprylyl Glycol, Butylene Glycol, Laureth-7, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Isohexadecane, Illicium Verum Fruit Extract, Phenoxyethanol, Polysorbate 80, Disodium EDTA, Oenothera Biennis Oil, Argania Spinosa Kernel Oil, Chamomilla Recutita Flower Oil, Sorbitan Oleate, Cyclomethicone, Hydrolyzed Collagen, Gelatin, Hydrolyzed Keratin, Avena Sativa Protein Extract, Rosmarinus Officinalis Leaf Extract, Lavandula Angustifolia Flower Extract, Thymus Vulgaris Flower/Leaf/Stem Extract, Origanum Vulgare Extract, Hydrolyzed Corn Protein, Hydrolyzed Wheat Protein, Hydrolyzed Soy Protein

Reviews

Alternatives

Ingredients Explained

These ingredients are found in both products.

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

You may know this ingredient as argan oil. It has emollient and skin conditioning properties that help soften skin and reinforce the lipid barrier.

The fatty acid profile of argan oil is roughly 45-55% oleic acid, 28-36% linoleic acid, 10-15% palmitic acid, and 5-7% stearic acid. It also contains vitamin E, sterols, squalene, and polyphenols like ferulic acid.

Two clinical studies in postmenopausal women found that applying argan oil for 60 days significantly improved skin elasticity and moisturization (reduced transepidermal water loss and increased epidermal water content).

Since it is high in oleic and linoleic acid, this ingredient may not be fungal acne safe. Both of these fall in the C11-C24 range that Malassezia yeast can metabolize.

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.

Dimethicone is a type of synthetic silicone created from natural materials such as quartz. It is also known as polydimethylsiloxane.

What it does:

Dimethicone comes in different viscosities:

Depending on the viscosity, dimethicone has different properties.

Ingredients lists don't always show which type is used, so we recommend reaching out to the brand if you have questions about the viscosity.

This ingredient is unlikely to cause irritation because it does not get absorbed into skin. However, people with silicone allergies should be careful about using this ingredient.

Note: Dimethicone may contribute to pilling. This is because it is not oil or water soluble, so pilling may occur when layered with products. When mixed with heavy oils in a formula, the outcome is also quite greasy.

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.

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.
  • You may know this ingredient as argan oil. It has emollient and skin conditioning properties that help soften skin and reinforce the lipid barrier.
  • The fatty acid profile of argan oil is roughly 45-55% oleic acid, 28-36% linoleic acid, 10-15% palmitic acid, and 5-7% stearic acid. It also contains vitamin E, sterols, squalene, and polyphenols like ferulic acid.
  • Two clinical studies in postmenopausal women found that applying argan oil for 60 days significantly improved skin elasticity and moisturization (reduced transepidermal water loss and increased epidermal water content).
  • Since it is high in oleic and linoleic acid, this ingredient may not be fungal acne safe. Both of these fall in the C11-C24 range that Malassezia yeast can metabolize.
  • 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.
  • Peg-60 Hydrogenated Castor Oil comes from hydrogenated castor oil. It is a solubilizer and emulsifier.
  • As a solubilizer, it helps dissolve ingredients into a water-based version. It is also an emulsifer. Emulsifier help prevent oils and water from separating. Both these properties help create evenly-spread and uniform products.
  • Basically, Peg-60 Hydrogenated Castor Oil helps hold ingredients together.
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