Shiseido Tsubaki Premium Repair Mask Hair Pack Versus Elizavecca Milky Piggy CER-100 Collagen Ceramide Coating Protein Treatment

Shiseido Tsubaki Premium Repair Mask Hair Pack Versus Elizavecca Milky Piggy CER-100 Collagen Ceramide Coating Protein Treatment

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Glycerin

Dimethicone

Isopentyldiol

Hydrogenated Rapeseed Alcohol

Behentrimonium Chloride

Stearyl Alcohol

Sorbitol

Aminopropyl Dimethicone

Hydroxyethyl Urea

Dihydroxypropyl Arginine Hcl

Steartrimonium Chloride

Lactic Acid

Camellia Seed Oil

Phytosteryl/Octyldodecyl Lauroyl Glutamate

Sodium Lauroyl Glutamate

Royal Jelly Extract

Sodium Acetylated Hyaluronate

Hydrolyzed Conchiolin Protein

Isopropyl Alcohol

Octyldodecanol

Alcohol

Citric Acid

Ammonium Lactate

Butylene Glycol

Dipropylene Glycol

Adenosine Phosphate

Amodimethicone

PPG-2-Deceth-12

Tocopherol

Phenoxyethanol

Sodium Benzoate

Parfum

CI 17200

CI 19140

Water, Glycerin, Dimethicone, Isopentyldiol, Hydrogenated Rapeseed Alcohol, Behentrimonium Chloride, Stearyl Alcohol, Sorbitol, Aminopropyl Dimethicone, Hydroxyethyl Urea, Dihydroxypropyl Arginine Hcl, Steartrimonium Chloride, Lactic Acid, Camellia Seed Oil, Phytosteryl/Octyldodecyl Lauroyl Glutamate, Sodium Lauroyl Glutamate, Royal Jelly Extract, Sodium Acetylated Hyaluronate, Hydrolyzed Conchiolin Protein, Isopropyl Alcohol, Octyldodecanol, Alcohol, Citric Acid, Ammonium Lactate, Butylene Glycol, Dipropylene Glycol, Adenosine Phosphate, Amodimethicone, PPG-2-Deceth-12, Tocopherol, Phenoxyethanol, Sodium Benzoate, Parfum, CI 17200, CI 19140

Cetearyl Alcohol

Cyclopentasiloxane

Cetrimonium Chloride

Trideceth-12

Panthenol

Tocopheryl Acetate

Caramel

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

Hydrolyzed Silk

Hydrolyzed Collagen

Gelatin

Hydrolyzed Keratin

Avena Sativa Kernel Extract

1,2-Hexanediol

Hydrolyzed Wheat Protein

Hydrolyzed Corn Protein

Hydrolyzed Soy Protein

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

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.

This ingredient is also called ethanol or ethyl alcohol. It is denatured, meaning made undrinkable for cosmetic use.

In formulas, it:

Is it bad for your skin?

The answer comes down to concentration. Patch and wash studies have found highly concentrated alcohol-based hand rubs (60-100%) cause less barrier disruption than washing with a basic detergent like SLS. The only measurable effect in these studies was a temporary dip in skin hydration.

Concentrations below 12-15% in leave-on cosmetics is generally well-tolerated. Concentrations above start to see increased transepidermal water loss (TEWL) and reduced hydration.

In concentrations about 58%, it creates temporary channels in your skin's lipid layers to become more permeable and allow other ingredients to slip through easily.

This ingredient can be up to 80% of the formula in alcohol-based perfumes.

Overall, this ingredient is probably harmless if found lower down an ingredients list but worth side-eyeing if it's high up (especially if your barrier is already struggling).

Alcohol can worsen dry skin, eczema, and oily skin, especially at higher concentrations. This is because it can increase transepidermal water loss and decrease hydration to disrupt the skin barrier.

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.

True allergic contact dermatitis to ethanol is uncommon, but be sure to patch test if you have dry or sensitive skin.

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%.

Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:

Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.

Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.

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.

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.

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.

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:

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

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.

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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