Updated on July 09, 2024
Overview
What they are
These products are both reef safe serums. They have a total of 7 ingredients in common
Cool Features
They both contain exfoliants
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, scar healing and dark spots
Free From
They both do not contain any parabens or sulfates
What's Inside
They both contain common allergens, fragrances and oils
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.
Ingredient Info
La Mer The Concentrate 49 ingredients
Rationale #5 The Serum 55 ingredients
What's inside (and what isn't)
What's inside (and what isn't)
At a glance
Click on any of the items below to learn more
La Mer The Concentrate 49 ingredients
Rationale #5 The Serum 55 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Cyclopentasiloxane
Emollient
Algae Extract
Emollient
Glycerin
Humectant
Dimethicone
Emollient
Polysilicone-11
Isononyl Isononanoate
EmollientDimethicone/PEG-10/15 Crosspolymer
Cyclohexasiloxane
Emollient
Sesamum Indicum Seed Oil
Emollient
Medicago Sativa Seed Powder
Skin ConditioningHelianthus Annuus Seedcake
Abrasive
Prunus Amygdalus Dulcis Seed Meal
Abrasive
Eucalyptus Globulus Leaf Oil
Perfuming
Sodium Gluconate
Skin ConditioningCopper Gluconate
Skin Conditioning
Calcium Gluconate
HumectantMagnesium Gluconate
Skin ConditioningZinc Gluconate
Skin Conditioning
Tocopheryl Succinate
Antioxidant
Niacin
Smoothing
Sesamum Indicum Seed Powder
Skin ConditioningWater
Skin ConditioningDimethicone Crosspolymer
Emulsion StabilisingLaminaria Ochroleuca Extract
Skin Conditioning
Triticum Vulgare Flour Lipids
Skin ConditioningCitrus Aurantifolia Peel Extract
Cleansing
Crithmum Maritimum Extract
Skin ConditioningAlteromonas Ferment Extract
Skin Conditioning
Chlorella Vulgaris Extract
Skin Conditioning
Yeast Extract
Skin Conditioning
Cholesterol
Emollient
Linoleic Acid
Cleansing
Tocopherol
Antioxidant
Tetraacetylphytosphingosine
Skin ConditioningCaprylic/Capric Triglyceride
Masking
Rosmarinus Officinalis Leaf Oil
Masking
Ocimum Basilicum Oil
Masking
Lavandula Angustifolia Oil
Masking
Lavandula Hybrida Oil
Emollient
Dipropylene Glycol
MaskingAlcohol Denat.
Antimicrobial
Sodium Citrate
BufferingParfum
Masking
Eugenol
Perfuming
Limonene
Perfuming
Linalool
Perfuming
BHT
Antioxidant
Phenoxyethanol
Preservative
Potassium Sorbate
Preservative
Cyclopentasiloxane, Algae Extract, Glycerin, Dimethicone, Polysilicone-11, Isononyl Isononanoate, Dimethicone/PEG-10/15 Crosspolymer, Cyclohexasiloxane, Sesamum Indicum Seed Oil, Medicago Sativa Seed Powder, Helianthus Annuus Seedcake, Prunus Amygdalus Dulcis Seed Meal, Eucalyptus Globulus Leaf Oil, Sodium Gluconate, Copper Gluconate, Calcium Gluconate, Magnesium Gluconate, Zinc Gluconate, Tocopheryl Succinate, Niacin, Sesamum Indicum Seed Powder, Water, Dimethicone Crosspolymer, Laminaria Ochroleuca Extract, Triticum Vulgare Flour Lipids, Citrus Aurantifolia Peel Extract, Crithmum Maritimum Extract, Alteromonas Ferment Extract, Chlorella Vulgaris Extract, Yeast Extract, Cholesterol, Linoleic Acid, Tocopherol, Tetraacetylphytosphingosine, Caprylic/Capric Triglyceride, Rosmarinus Officinalis Leaf Oil, Ocimum Basilicum Oil, Lavandula Angustifolia Oil, Lavandula Hybrida Oil, Dipropylene Glycol, Alcohol Denat., Sodium Citrate, Parfum, Eugenol, Limonene, Linalool, BHT, Phenoxyethanol, Potassium Sorbate
Water
Skin ConditioningEthoxydiglycol
HumectantVaccinium Myrtillus Fruit Extract
Skin ConditioningDimethyl Isosorbide
SolventSalicylic Acid
Masking
Lactic Acid
Buffering
Saccharum Officinarum Extract
MoisturisingGlycerin
Humectant
Citrus Aurantium Dulcis Fruit Extract
MaskingCitrus Limon Fruit Extract
Masking
Sodium Levulinate
Skin ConditioningAcer Saccharum Extract
Skin ConditioningDiutan Gum
Melaleuca Alternifolia Leaf
Abrasive
Sodium Anisate
AntimicrobialMentha Australis Leaf Extract
Skin ConditioningButylene Glycol
Humectant
Santalum Spicatum Seed Oil
Skin Conditioning
Citrus Aurantium Dulcis Oil
Masking
Citrus Aurantium Bergamia Leaf Oil
Astringent
Juniperus Mexicana Oil
Masking
Pelargonium Graveolens Oil
Masking
Citrus Aurantium Amara Flower Oil
Masking
Eugenia Caryophyllus Leaf Oil
Masking
Citrus Aurantium Bergamia Fruit Oil
Masking
Citrus Grandis Peel Oil
Masking
Citrus Limon Peel Oil
Masking
Litsea Cubeba Fruit Oil
Masking
Pentylene Glycol
Skin ConditioningMagnesium Aspartate
Skin ConditioningZinc Gluconate
Skin Conditioning
Citrus Australasica Fruit Extract
Antioxidant
Sodium Benzoate
Masking
Citric Acid
Buffering
Copper Gluconate
Skin Conditioning
Potassium Sorbate
Preservative
Glycine
Buffering
Serine
Masking
Glutamic Acid
Humectant
Aspartic Acid
Masking
Leucine
Skin ConditioningAlanine
MaskingLysine
Skin ConditioningArginine
Masking
Tyrosine
MaskingPhenylalanine
Masking
Proline
Skin ConditioningThreonine
Valine
MaskingIsoleucine
Skin ConditioningHistidine
Humectant
Limonene
Perfuming
Citral
Perfuming
Linalool
Perfuming
Citronellol
Perfuming
Water, Ethoxydiglycol, Vaccinium Myrtillus Fruit Extract, Dimethyl Isosorbide, Salicylic Acid, Lactic Acid, Saccharum Officinarum Extract, Glycerin, Citrus Aurantium Dulcis Fruit Extract, Citrus Limon Fruit Extract, Sodium Levulinate, Acer Saccharum Extract, Diutan Gum, Melaleuca Alternifolia Leaf, Sodium Anisate, Mentha Australis Leaf Extract, Butylene Glycol, Santalum Spicatum Seed Oil, Citrus Aurantium Dulcis Oil, Citrus Aurantium Bergamia Leaf Oil, Juniperus Mexicana Oil, Pelargonium Graveolens Oil, Citrus Aurantium Amara Flower Oil, Eugenia Caryophyllus Leaf Oil, Citrus Aurantium Bergamia Fruit Oil, Citrus Grandis Peel Oil, Citrus Limon Peel Oil, Litsea Cubeba Fruit Oil, Pentylene Glycol, Magnesium Aspartate, Zinc Gluconate, Citrus Australasica Fruit Extract, Sodium Benzoate, Citric Acid, Copper Gluconate, Potassium Sorbate, Glycine, Serine, Glutamic Acid, Aspartic Acid, Leucine, Alanine, Lysine, Arginine, Tyrosine, Phenylalanine, Proline, Threonine, Valine, Isoleucine, Histidine, Limonene, Citral, Linalool, Citronellol
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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 GlycerinThis ingredient is a copper salt known for its wound healing properties.
Our bodies use copper to help stabilize our skin's collagen and elastin. Its also an essential for superoxide dismutase, an enzyme with strong antioxidant properties.
Copper has wound healing properties due to its role in creating new blood vessels and tissue repair.
Learn more about Copper GluconateZinc gluconate has antibacterial and wound healing properties. It is particularly effective against fighting inflammatory acne.
This ingredient is the zinc salt of the PHA gluconic acid. PHAs are gentle cousins to AHAs.
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. Stay hydrated!
Learn more about WaterLimonene is a fragrance that adds scent and taste to a formulation.
It's found in the peel oil of citrus fruits and other plants such as lavender and eucalyptus. The scent of limonene is generally described as "sweet citrus".
Limonene acts as an antioxidant, meaning it helps neutralize free radicals.
When exposed to air, oxidized limonene may sensitize the skin. Because of this, limonene is often avoided by people with sensitive skin.
The term '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.
Learn more about LimoneneLinalool 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.
Learn more about LinaloolPotassium Sorbate is a preservative used to prevent yeast and mold in products. It is commonly found in both cosmetic and food products.
This ingredient comes from potassium salt derived from sorbic acid. Sorbic acid is a natural antibiotic and effective against fungus.
Both potassium sorbate and sorbic acid can be found in baked goods, cheeses, dried meats, dried fruit, ice cream, pickles, wine, yogurt, and more.
You'll often find this ingredient used with other preservatives.
Learn more about Potassium SorbateIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
La Mer The Concentrate 49 ingredients
Rationale #5 The Serum 55 ingredients
Reviews
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