++++

[ DemythSkin Verdict ]

La Mer The Concentrate Serum

SerumBarrier Repair

Efficacy

Basic

3.5 / 5.0

Safety

Harsh

2.6 / 5.0

System Verdict

This is a fragranced barrier-support serum, not a true treatment serum, and the irritation burden is high. The efficacy score is held up mainly by glycerin, silicones for slip and barrier feel, and a modest barrier-lipid cluster (cholesterol, linoleic acid, tetraacetylphytosphingosine), but it loses a lot of credit because the strongest visible formula story is mostly marketing extracts, niacin appears low and weak, and the formula is loaded with essential oils, parfum, and alcohol denat. that can undermine tolerance.

Active Ingredients Detected

A Tier: Good BasicsProven Results

CyclopentasiloxaneGlycerinDimethiconeDimethicone/Peg-10/15 CrosspolymerWater/Aqua/EauDimethicone CrosspolymerAlteromonas Ferment ExtractCholesterolTocopherolTetraacetylphytosphingosineCaprylic/Capric Triglyceride

B Tier: Supporting IngredientsPromising Ingredients

Polysilicone-11Isononyl IsononanoateCyclohexasiloxaneSesamum Indicum (Sesame) Seed OilMedicago Sativa (Alfalfa) Seed PowderHelianthus Annuus (Sunflower) SeedcakePrunus Amygdalus Dulcis (Sweet Almond) Seed MealSodium GluconateCopper GluconateCalcium GluconateMagnesium GluconateZinc GluconateTocopheryl SuccinateNiacinSesamum Indicum (Sesame) Seed PowderTriticum Vulgare (Wheat) Flour LipidsCrithmum Maritimum ExtractLinoleic AcidDipropylene GlycolSodium CitrateBhtPhenoxyethanolPotassium Sorbate

C Tier: Marketing IdolsHype | Limited or Weak Data

Algae ExtractLaminaria Ochroleuca ExtractCitrus Aurantifolia (Lime) Peel ExtractChlorella Vulgaris ExtractYeast Extract/Faex/Extrait De Levure

D Tier: Potential IrritantsBe Cautious

Eucalyptus Globulus (Eucalyptus) Leaf OilRosmarinus Officinalis (Rosemary) Leaf OilOcimum Basilicum (Basil) OilLavandula Angustifolia (Lavender) OilLavandula Hybrida (Lavandin) OilAlcohol Denat.Fragrance (Parfum)EugenolLimoneneLinalool

What Each Ingredient Does

Cyclopentasiloxane: Light volatile slip solvent
Algae Extract: Marketing-led marine extract
Glycerin: Primary humectant
Dimethicone: Barrier-smoothing silicone
Polysilicone-11: Film-forming texture aid
Isononyl Isononanoate: Silky emollient ester
Dimethicone/Peg-10/15 Crosspolymer: Gel-texture stabilizer
Cyclohexasiloxane: Volatile silicone carrier
Sesamum Indicum (Sesame) Seed Oil: Emollient plant oil
Medicago Sativa (Alfalfa) Seed Powder: Abrasive botanical filler
Helianthus Annuus (Sunflower) Seedcake: Botanical marketing material
Prunus Amygdalus Dulcis (Sweet Almond) Seed Meal: Botanical filler
Eucalyptus Globulus (Eucalyptus) Leaf Oil: Fragrant irritant oil
Sodium Gluconate: Chelating stability aid
Copper Gluconate: Trace mineral support
Calcium Gluconate: Trace mineral support
Magnesium Gluconate: Trace mineral support
Zinc Gluconate: Trace mineral support
Tocopheryl Succinate: Vitamin E derivative antioxidant
Niacin: Low-potency niacin source
Sesamum Indicum (Sesame) Seed Powder: Botanical marketing material
Water/Aqua/Eau: Solvent base
Dimethicone Crosspolymer: Texture-enhancing silicone
Laminaria Ochroleuca Extract: Soothing seaweed extract

Full Ingredient List (INCI)

Cyclopentasiloxane, Algae Extract, Glycerin, Dimethicone, Polysilicone-11, Isononyl Isononanoate, Dimethicone/Peg-10/15 Crosspolymer, Cyclohexasiloxane, Sesamum Indicum (Sesame) Seed Oil, Medicago Sativa (Alfalfa) Seed Powder, Helianthus Annuus (Sunflower) Seedcake, Prunus Amygdalus Dulcis (Sweet Almond) Seed Meal, Eucalyptus Globulus (Eucalyptus) Leaf Oil, Sodium Gluconate, Copper Gluconate, Calcium Gluconate, Magnesium Gluconate, Zinc Gluconate, Tocopheryl Succinate, Niacin, Sesamum Indicum (Sesame) Seed Powder, Water/Aqua/Eau, Dimethicone Crosspolymer, Laminaria Ochroleuca Extract, Triticum Vulgare (Wheat) Flour Lipids, Citrus Aurantifolia (Lime) Peel Extract, Crithmum Maritimum Extract, Alteromonas Ferment Extract, Chlorella Vulgaris Extract, Yeast Extract/Faex/Extrait De Levure, Cholesterol, Linoleic Acid, Tocopherol, Tetraacetylphytosphingosine, Caprylic/Capric Triglyceride, Rosmarinus Officinalis (Rosemary) Leaf Oil, Ocimum Basilicum (Basil) Oil, Lavandula Angustifolia (Lavender) Oil, Lavandula Hybrida (Lavandin) Oil, Dipropylene Glycol, Alcohol Denat., Sodium Citrate, Fragrance (Parfum), Eugenol, Limonene, Linalool, Bht, Phenoxyethanol, Potassium Sorbate

Frequently Asked

Is La Mer The Concentrate Serum worth it?

La Mer The Concentrate Serum scores 3.5 out of 5.0 for efficacy (Basic) and 2.6 out of 5.0 for safety (Harsh) on DemythSkin's independent ingredient analysis. This is a fragranced barrier-support serum, not a true treatment serum, and the irritation burden is high. The efficacy score is held up mainly by glycerin, silicones for slip and barrier feel, and a modest barrier-lipid

What are the key active ingredients in La Mer The Concentrate Serum?

La Mer The Concentrate Serum contains no gold-standard actives — its formula is built on supporting and base ingredients rather than clinically transformative actives.

Does La Mer The Concentrate Serum contain fragrance or known irritants?

DemythSkin flags these ingredients in La Mer The Concentrate Serum as potential irritants: Eucalyptus Globulus (Eucalyptus) Leaf Oil, Rosmarinus Officinalis (Rosemary) Leaf Oil, Ocimum Basilicum (Basil) Oil, Lavandula Angustifolia (Lavender) Oil, Lavandula Hybrida (Lavandin) Oil, Alcohol Denat., Fragrance (Parfum), Eugenol, Limonene, Linalool. This product does contain fragrance.

How is La Mer The Concentrate Serum scored?

DemythSkin grades every product on two independent axes: efficacy (whether the ingredients have clinical evidence of working) and safety (irritation and sensitisation risk). Ingredients are classified S through D against a database of over 3,000 compounds. No brand pays for a score.

Analyze on DemythSkin →

Analysis last updated: 2026-07-24. DemythSkin is an independent ingredient analyzer. Scores are computed by a deterministic rubric from published clinical evidence — no brand pays for a score.