Here's our complete breakdown comparing the ingredients, attributes, and more of itk Nightly Clarifying Serum versus Biologique Recherche Le Grand Sérum Beautifying Elixir for the Face .
Last updated on November 18, 2023. Published on December 12, 2023
Overview
What they are
These products are both cruelty-free and reef safe serums. They have a total of 16 ingredients in common
Cool Features
They both contain AHA, hyaluronic acid, niacinamide and peptides
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture
Free From
They both do not contain any parabens, silicones or sulfates
What's Inside
They both contain oils
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that need an update? Let us know.
Ingredient Info
itk Nightly Clarifying Serum 31 ingredients
Biologique Recherche Le Grand Sérum Beautifying Elixir for the Face 60 ingredients
Alcohol Free
This product is free of harsh alcohols 🎉
Silicon Free
This product is free of silicons 🎉
Fragrance Free
This product is free of fragrances 🎉
Sulfate Free
This product is free of sulfates 🎉
Paraben Free
This product is free of parabens 🎉
Contains Oils
Ingredients in this product that are types of oil:
Not Malassezia Safe
Ingredients in this product that are not malassezia safe:
Reef Safe
This product is free of ingredients that damage reefs 🎉
EU Allergen Free
This product is free of EU allergens 🎉
Vegan
This product is vegan 🎉
Cruelty Free
This product is cruelty-free 🎉
Contains Alcohol
Ingredients in this product that are types of alcohol:
Silicon Free
This product is free of silicons 🎉
Contains Fragrance
Ingredients in this product that are forms of fragrance:
Sulfate Free
This product is free of sulfates 🎉
Paraben Free
This product is free of parabens 🎉
Contains Oils
Ingredients in this product that are types of oil:
Malassezia Safe
This product is free of malassezia feeding ingredients 🎉
Reef Safe
This product is free of ingredients that damage reefs 🎉
Contains EU Allergens
Ingredients in this product that are EU allergens:
Non Vegan
This product is not vegan 😥
Cruelty Free
This product is cruelty-free 🎉
At a glance
Click on any of the items below to learn more
itk Nightly Clarifying Serum 31 ingredients
Biologique Recherche Le Grand Sérum Beautifying Elixir for the Face 60 ingredients
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Benefits
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Concerns
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Join SkinSortIngredients Compared
Ingredients that are highlighted in purple are present in both products.
itk Nightly Clarifying Serum 31 ingredients
Biologique Recherche Le Grand Sérum Beautifying Elixir for the Face 60 ingredients
Water • Glycerin • Pentylene Glycol • Caprylic/Capric Triglyceride • Simmondsia Chinensis Seed Oil • Potassium Azeloyl Diglycinate • Polyacrylate Crosspolymer-6 • Niacinamide • Biosaccharide Gum-1 • Bakuchiol • Butylene Glycol • Propylene Glycol • Panthenol • Tocopheryl Acetate • Disodium EDTA • Sodium Lactate • Urea • Tea-Lactate • Sorbitol • Serine • Lactic Acid • Allantoin • Carnosine • Carbomer • Phenoxyethanol • Sodium Chloride • Polysorbate 20 • Sodium Hyaluronate • Sodium Benzoate • Palmitoyl Tripeptide-1 • Palmitoyl Tetrapeptide-7
Water • Propylene Glycol • Glycerin • Alcohol Denat. • Cucumis Sativus Fruit Extract • Lactobacillus/Wasabia Japonica Root Ferment Extract • Sodium Gluconate • Sodium Lactate • Empetrum Nigrum Fruit Juice • Butylene Glycol • Hydrolyzed Silk • Magnesium Chloride • Niacinamide • Vinegar • Tea-Lactate • Alcohol • Yeast Extract • Citric Acid • Lactic Acid • Mimosa Tenuiflora Bark Extract • Sodium Salicylate • Phenoxyethanol • Myrtus Communis Extract • Sorbitol • Sodium Benzoate • Acacia Senegal Gum • Honey Extract • Nasturtium Officinale Extract • Pueraria Lobata Root Extract • Xanthan Gum • Allium Cepa Bulb Extract • Pvp • Pentylene Glycol • Biosaccharide Gum-2 • Commiphora Myrrha Resin Extract • Royal Jelly Extract • Tannic Acid • Hamamelis Virginiana Bark/Leaf/Twig Extract • Vaccinium Macrocarpon Fruit Extract • Allantoin • Serine • Urea • Carum Carvi Fruit Oil • Jasminum Grandiflorum Flower Extract • Potassium Sorbate • Caprylyl Glycol • Rhizobian Gum • Sodium Hyaluronate • Hypericum Perforatum Flower/Leaf/Stem Extract • Sambucus Nigra Flower Extract • Terminalia Catappa Leaf Extract • Pyridoxine Hcl • Thiamine Hcl • Mentha Piperita Oil • Chlorphenesin • Sorbic Acid • Acetyl Hexapeptide-8 • Farnesol • Limonene • Linalool
Ingredients Side-by-side
Ingredients that are highlighted in purple are present in both products.
Learn more about what what Com. / Irr. ratings are
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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. Talk about multi-purpose! If you see this, drink a glass of water. Stay hydrated!
Learn more about Wateritk Nightly Clarifying Serum contains this as ingredient number 1.
Biologique Recherche Le Grand Sérum Beautifying Elixir for the Face contains this as ingredient number 1.
Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.
A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.
As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.
Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.
Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.
In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.
This ingredient is organic, colorless, odorless, and non-toxic.
Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
Learn more about Glycerinitk Nightly Clarifying Serum contains this as ingredient number 2.
Biologique Recherche Le Grand Sérum Beautifying Elixir for the Face contains this as ingredient number 3.
Pentylene glycol is typically used within a product to thicken it. It also adds a smooth, soft, and moisturizing feel to the product. It is naturally found in plants such as sugar beets.
The hydrophilic trait of Pentylene Glycol makes it a humectant. As a humectant, Pentylene Glycol helps draw moisture from the air to your skin. This can help keep your skin hydrated.
This property also makes Pentylene Glycol a great texture enhancer. It can help thicken or emulsify a product. Emulsifiers help stabilize a product. It does this by preventing certain ingredients from separating.
Pentylene Glycol also acts as a mild preservative and helps to keep a product microbe-free.
Some people may experience mild eye and skin irritation from Pentylene Glycol. We always recommend speaking with a professional about using this ingredient in your routine.
Pentylene Glycol has a low molecular weight and is part of the 1,2-glycol family.
Learn more about Pentylene Glycolitk Nightly Clarifying Serum contains this as ingredient number 3.
Biologique Recherche Le Grand Sérum Beautifying Elixir for the Face contains this as ingredient number 33.
Niacinamide has emerged as an all-star ingredient due to its many benefits.
It is known to treat acne by reducing inflammation. It also helps fade dark-spots and strengthen the skin by promoting the growth of the ceramide barrier.
Other benefits include smoothing wrinkles and minimizing redness.
The cherry on top? Niacinamide can also help build keratin, a protein that keeps skin firm.
When incorporating niacinamide into your routine, look out for concentration amounts. Typically, 5% niacinamide provides benefits such as fading dark spots. However, if you have sensitive skin, it is better to begin with a smaller concentration.
Niacinamide can be mixed with other ingredients to boost benefits. For instance, it has shown to be effective when used with copper, folic acid, and zinc to treat acne.
Learn more about Niacinamideitk Nightly Clarifying Serum contains this as ingredient number 8.
Biologique Recherche Le Grand Sérum Beautifying Elixir for the Face contains this as ingredient number 13.
Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
- It is a solvent, meaning that it helps to dissolve other ingredients. This also enhances the absorption of the product into one's skin.
- It is a humectant, which means that it helps attract moisture into the skin.
- It helps improve product application.
Overall, Butylene Glycol is a safe and well-rounded ingredient. It is unlikely to irritate skin, and works well with pretty much all other ingredients.
itk Nightly Clarifying Serum contains this as ingredient number 11.
Biologique Recherche Le Grand Sérum Beautifying Elixir for the Face contains this as ingredient number 10.
Propylene Glycol is an odorless, colorless liquid. As a humectant, it helps skin retain moisture. It also aids in delivering active ingredients.
Another role of this ingredient is preventing a product from melting or freezing. Propylene glycol also adds antimicrobrial properties to a product, elongating product lifespan.
This ingredient is considered an organic alcohol and commonly added into both cosmetics and foods.
Those with sensitive skin or conditions may deliver a rash when using this ingredient.
Learn more about Propylene Glycolitk Nightly Clarifying Serum contains this as ingredient number 12.
Biologique Recherche Le Grand Sérum Beautifying Elixir for the Face contains this as ingredient number 2.
Sodium Lactate is the sodium salt of lactic acid, an AHA. It is a humectant and used to adjust the pH of a product.
Sodium Lactate is part of our skin's NMF, or natural moisturizing factor. Our NMF is essential for the hydration of our top skin layers and plasticity of skin.
It also influences our skin's natural acid mantle and pH, which protects our skin from harmful bacteria.
Our NMF is formed from amino acids, lactic acid, sugars, minerals, peptides, and electrolytes. As we age, our NMF naturally depletes. Other sources of NMF depletion include harsh and drying ingredients such as denatured alcohol. Sodium lactate can help replenish our NMF, leading to more hydrated and plump skin.
High percentages of Sodium Lactate can have an exfoliating effect.
Sodium Lactate is produced from fermented sugar.
Learn more about Sodium Lactateitk Nightly Clarifying Serum contains this as ingredient number 16.
Biologique Recherche Le Grand Sérum Beautifying Elixir for the Face contains this as ingredient number 8.
Urea is also called carbamide and is the diamide of carbonic acid. In cosmetics, urea is used to hydrate the skin. It also provides exfoliation in higher concentrations.
As a humectant, urea helps draw moisture from the air and from deep within the skin. This helps hydrate your skin. Studies show urea is an effective moisturizer for dry skin conditions. 40% urea is typical in medications for treating eczema and other skin conditions.
Urea has the strongest exfoliation effect in concentrations higher than 10%. It is a keratolytic agent, meaning it breaks down the keratin protein in the top layer of skin. This helps remove dead skin cells and flaking skin.
In medicine, urea has been shown to help increase the potency of other ingredients, such as fungal treatments.
Humans and animals use urea to metabolize nitrogen-containing compounds. Urea is highly soluble in water. Once dissolved, it is neither acidic nor alkaline.
Learn more about Ureaitk Nightly Clarifying Serum contains this as ingredient number 17.
Biologique Recherche Le Grand Sérum Beautifying Elixir for the Face contains this as ingredient number 42.
We don't have a description for Tea-Lactate.
itk Nightly Clarifying Serum contains this as ingredient number 18.
Biologique Recherche Le Grand Sérum Beautifying Elixir for the Face contains this as ingredient number 15.
Sorbitol is a sugar alcohol. It is a hydrating and moisturizing agent created from the reduction process of glucose.
Most sorbitol is usually made from potato starch. It is also found in fruits such as apples and pears.
As a humectant, Sorbitol helps draw water to the skin. This helps keep the skin hydrated. Sorbitol also helps create a thicker texture in products. You might find sorbitol in your toothpaste and other gels.
It is a non-irritating ingredient that is great for those with dry skin.
Sorbitol is a prebiotic. It helps promote the growth of healthy bacteria on your skin. The bacteria on your skin form a microbiome. This microbiome helps protect your skin from infection and harmful bacteria.
Learn more about Sorbitolitk Nightly Clarifying Serum contains this as ingredient number 19.
Biologique Recherche Le Grand Sérum Beautifying Elixir for the Face contains this as ingredient number 24.
Serine is an amino acid naturally found in our body. Our bodies use amino acids to create protein.
Amino-acids help give keep our skin hydrated. They play an important role in the skin barrier, which keeps the skin plump and firm.
Serine is a non-essential amino acid, meaning we don't need to obtain it from eating foods.
Learn more about Serineitk Nightly Clarifying Serum contains this as ingredient number 20.
Biologique Recherche Le Grand Sérum Beautifying Elixir for the Face contains this as ingredient number 41.
Lactic Acid is an AHA that is derived from fermenting lactose, a carbohydrate from milk. It removes the top layer of old and dead skin cells and helps increase cell turnover.
Benefits of Lactic Acid are that it can help to reduce large pores and reduce the effects of aging. Some potential downsides are that it can be bad for dry skin, cause irritation, worsen eczema, and worsen rosacea.
Not only does it help exfoliate the skin, it helps strengthen the skin's barrier. When applied, lactic acid helps the skin create ceramides.
Lactic acid is an over-the-counter chemical exfoliant that comes from the fermentation of lactose — a carbohydrate found in milk.
Legend has it that Cleopatra used to bathe in sour milk to help reduce wrinkles.
Read more about some other popular AHA's here:
Learn more about Lactic Aciditk Nightly Clarifying Serum contains this as ingredient number 21.
Biologique Recherche Le Grand Sérum Beautifying Elixir for the Face contains this as ingredient number 19.
Allantoin plays a role in soothing and moisturizing the skin. Because of this, it is often added to products with strong active ingredients.
Some studies have shown this ingredient can promote wound healing with higher concentrations.
Allantoin is derived from the comfrey plant but produced synthetically for cosmetic products to ensure purity.
Learn more about Allantoinitk Nightly Clarifying Serum contains this as ingredient number 22.
Biologique Recherche Le Grand Sérum Beautifying Elixir for the Face contains this as ingredient number 40.
Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent germ and microbial growth. By itself, it has a scent that is similar to that of a rose.
It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.
itk Nightly Clarifying Serum contains this as ingredient number 25.
Biologique Recherche Le Grand Sérum Beautifying Elixir for the Face contains this as ingredient number 22.
Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.
Like hyaluronic acid, it is great at holding water and acts as a humectant. This makes it a great skin hydrating ingredient.
Sodium Hyaluronate is naturally occurring in our bodies and is mostly found in eye fluid and joints.
These are some other common types of Hyaluronic Acid:
Learn more about Sodium Hyaluronateitk Nightly Clarifying Serum contains this as ingredient number 28.
Biologique Recherche Le Grand Sérum Beautifying Elixir for the Face contains this as ingredient number 48.
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.
Sodium Benzoate 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.
Learn more about Sodium Benzoateitk Nightly Clarifying Serum contains this as ingredient number 29.
Biologique Recherche Le Grand Sérum Beautifying Elixir for the Face contains this as ingredient number 25.
Here's what our community thinks of the ingredients in these two products.
itk Nightly Clarifying Serum 31 ingredients
Biologique Recherche Le Grand Sérum Beautifying Elixir for the Face 60 ingredients
Usage
Here's some more info on how this product is used by our community.
When to use
itk Nightly Clarifying Serum 31 ingredients
Biologique Recherche Le Grand Sérum Beautifying Elixir for the Face 60 ingredients
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