Peptide Skincare & BeautySkin science and ingredient guides

Skin science article

L'Oréal Professionnel Absolut Repair Conditioner for Damaged Hair Versus L'Oréal Professionnel Absolut Repair Molecular Repair Leave In Mask

L'Oréal Professionnel Absolut Repair Conditioner for Damaged Hair Versus L'Oréal Professionnel Absolut Repair Molecular Repair Leave In Mask What's inside Benefits Concerns Ingredients Side-by-side Water Cetearyl Alcohol Dicetyldimonium Chloride Cetrimonium Ch

L'Oréal Professionnel Absolut Repair Conditioner for Damaged Hair Versus L'Oréal Professionnel Absolut Repair Molecular Repair Leave In Mask

What's inside

Benefits

Concerns

Ingredients Side-by-side

Water

Cetearyl Alcohol

Dicetyldimonium Chloride

Cetrimonium Chloride

Dimethicone

Cetyl Esters

Sodium Benzoate

Isopropyl Alcohol

Amodimethicone

Linalool

Trideceth-10

Tartaric Acid

Hexyl Cinnamal

Chlorhexidine Digluconate

Limonene

PEG-100 Stearate

Phenoxyethanol

Steareth-6

Trideceth-3

Chenopodium Quinoa Seed Extract

CI 19140

Acetic Acid

Hydroxypropyltrimonium Hydrolyzed Wheat Protein

Trisodium Hedta

CI 17200

Parfum

Water, Cetearyl Alcohol, Dicetyldimonium Chloride, Cetrimonium Chloride, Dimethicone, Cetyl Esters, Sodium Benzoate, Isopropyl Alcohol, Amodimethicone, Linalool, Trideceth-10, Tartaric Acid, Hexyl Cinnamal, Chlorhexidine Digluconate, Limonene, PEG-100 Stearate, Phenoxyethanol, Steareth-6, Trideceth-3, Chenopodium Quinoa Seed Extract, CI 19140, Acetic Acid, Hydroxypropyltrimonium Hydrolyzed Wheat Protein, Trisodium Hedta, CI 17200, Parfum

Isopropyl Myristate

Triethanolamine

Carbomer

Polyquaternium-4

Potato Starch Modified

Hydroxypropyl Guar

Behentrimonium Chloride

Arginine

Trideceth-6

Glycine

Serine

Tyrosine

Citric Acid

Glutamic Acid

Coumarin

Benzyl Alcohol

Benzyl Benzoate

Alpha-Isomethyl Ionone

Water, Isopropyl Myristate, Dimethicone, Amodimethicone, Triethanolamine, Phenoxyethanol, Carbomer, Polyquaternium-4, Potato Starch Modified, Hydroxypropyl Guar, Behentrimonium Chloride, Arginine, Trideceth-6, Isopropyl Alcohol, Cetrimonium Chloride, Linalool, Glycine, Serine, Tyrosine, Citric Acid, Glutamic Acid, Coumarin, Benzyl Alcohol, Benzyl Benzoate, Alpha-Isomethyl Ionone, Parfum

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, 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.

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.

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.

Linalool is a fragrance and helps add scent to products. It's derived from common plants such as cinnamon, mint, citrus, and lavender.

Like Limonene, this ingredient oxidizes when exposed to air. Oxidized linalool can cause allergies and skin sensitivity.

This ingredient has a scent that is floral, spicy tropical, and citrus-like.

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!

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