1st on the list, which puts it at an estimated 10–40% of the formula.
Decamethylcyclopentasiloxane
LA MER
The Neck and Décolleté Concentrate
neck mask
LA MER
neck mask
Added Last edited
Fit by skin type
General, ingredient-based — not your personalized match.
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Take the skin testLa Mer’s The Neck and Décolleté Concentrate is a sumptuous balm treatment for a lifted look and a firmer feel. This intensive balm delivers plumping hydration and concentrated cell-renewing Miracle Broth™ to help create a more youthful-looking neckline.
The Neck and Décolleté Concentrate is a cushioning mask from LA MER. The formula is built mainly around hydration and soothing. The ingredient list runs to 64 ingredients, each broken down in full below.
By its ingredient list the formula reads as moderately cushioned — emollient enough to feel like a cream, without the heaviest occlusives near the top. It contains both silicones and oils, a combination that usually finishes smooth and slightly satin and sits well under makeup. Hydration is handled by Glycerin, Cyclopentasiloxane and Algae Extract, humectants that pull water into the upper layers of skin rather than sealing it there.
Hydration: Very high. Ingredients that pull and hold water in the upper layers of skin, and here that comes from Glycerin, Cyclopentasiloxane, Algae Extract and Water.
Soothing: High. Ingredients aimed at visible redness and reactivity, and here that comes from Isononyl Isononanoate, Benzyl Benzoate, Algae Extract and Sea Whip Extract.
On richness alone it suits Balanced skin best, and is the least natural fit for Dry, Combination (dry), Combination (oily) and Oily skin. A few ingredients carry irritation flags, so reactive skin should patch test before using it on the whole face.
The formula contributes little or nothing on antioxidant protection, oil control, brightening and tone and cell renewal. That is not a fault — most products are not meant to do everything — but if one of those is your priority, this is not the product that will address it.
Reading the full list, the formula is paraben-free, microplastic-free, sulfate-free, dye-free and no animal-derived ingredients. Those claims come from the ingredient list itself, not from the packaging. It does contain fragrance, essential oils and drying alcohol, worth knowing if your skin reacts to any of them.
It can be used morning and evening. In a routine it goes after serums. Seal in your serums with it; in the morning, sunscreen still goes on top.
This summary is generated from the product's ingredient list. It is not a review, it is not the brand's own marketing claims, and it does not replace advice from a dermatologist.
Drawn purely from the ingredient list
Scored on how rich or light the formula reads from its INCI order.
A few ingredients here carry irritation flags. Reactive skin should patch test on the jawline for a few days before using it on the whole face.
Based on the curated benefits documented for this product's ingredients.
Attracts and locks in moisture to keep skin plump and dewy
Boosts collagen and cell turnover to reduce fine lines and wrinkles
Calms redness, irritation, and inflammation for sensitive skin
Targets breakouts by reducing bacteria and unclogging pores
Brightens and balances complexion for a more uniform appearance
None of the ingredients in this formula are associated with these benefits. This is not unusual, as most products are designed to target a limited number of concerns.
The actives, UV filters and benefit-carrying ingredients in this formula, in the order they are listed.
1st on the list, which puts it at an estimated 10–40% of the formula.
Decamethylcyclopentasiloxane
2nd on the list, which puts it at an estimated 5–20% of the formula.
Algae Extract is an extract of various species of Algae; Extract of the Seaweed, Fucus vesiculosus, Furaceae
3rd on the list, which puts it at an estimated 5–20% of the formula.
Aqua (EU),Deionized Water,Distilled Water,Micromatrix Fractile AN,Onsen-Sui (JPN),Purified Water
4th on the list, which puts it at an estimated 2–10% of the formula.
Glycerine ;Glycerol (INN); Glycerol (RIFM); Glycerolum (EP); Glycyl Alcohol; 1,2,3-Propanetriol; 1,2,3-Trihydroxypropane
5th on the list, which puts it at an estimated 2–10% of the formula.
Dimethicone
6th on the list, which puts it at an estimated 2–10% of the formula.
1,1,1,3,5,5,5-Heptamethyl-3-(trimethylsilyloxy)trisiloxane
7th on the list, which puts it at an estimated 1–5% of the formula.
Dodecamethylcyclohexasiloxane
10th on the list, which puts it at an estimated 1–5% of the formula.
Dimethicone/PEG-10/15 Crosspolymer is a copolymer of dimethicone crosslinked with a mixture of PEG-10 and PEG-15 diallyl ethers
13th on the list, which puts it at an estimated 1–3% of the formula.
Sea Whip Extract is an extract of the marine invertebrate, Pseudopterogorgia elisabethae
19th on the list, which puts it at an estimated 1–3% of the formula.
Sodium gluconate
20th on the list, which puts it at an estimated 1–3% of the formula.
Copper di-D-gluconate
22nd on the list, which puts it at an estimated 1–3% of the formula.
Magnesium digluconate
Each axis is scored from the ingredients present and how high up the list they sit.
Ingredients that pull and hold water in the upper layers of skin
Lipids and repair signals that support skin barrier integrity
Ingredients that mop up free radicals from UV and pollution
Ingredients that moderate sebum or absorb shine
Ingredients that act on uneven tone and post-inflammatory marks
Ingredients aimed at visible redness and reactivity
Retinoids, acids and enzymes that speed surface turnover
Peptides and growth factors that signal for collagen support
"Active" here means an ingredient carrying a recorded active type or a recognised UV filter.
Solvents, emollients, texture agents and preservatives — the formula that carries the actives.
Read from the full ingredient list. A brand's own claim may differ.
Parfum, Hexyl Cinnamal, Amyl Cinnamal, Limonene, Linalool
Eucalyptus Globulus Leaf Oil, Hexyl Cinnamal, Amyl Cinnamal, Limonene, Linalool
Alcohol Denat.
Cyclopentasiloxane, Dimethicone, Methyl Trimethicone, Cyclohexasiloxane, Polysilicone-11
Sesamum Indicum Seed Oil
Judged by the same curated rules our routine checker uses. It reads the ingredients, not the label.
Nothing in this formula belongs to a group our rules can put in conflict, so it layers freely. Order still matters — thinnest texture first.
This product is the "Moisturise" step.
Flags to check, not verdicts. None of this is medical advice — if you are pregnant, breastfeeding or treating a skin condition, ask a doctor.
Most ingredients do more than one job, so these counts add up to more than the 64 ingredients on the label.
Botanical material, usually for antioxidants or scent
Dissolves and carries everything else
Softens and smooths by filling gaps between skin cells
Changes how the product smells or looks
Sets the thickness, spread and stability of the formula
Forms a film that slows water loss
Lifts oil and dirt, or holds oil and water together
Draws water into the upper layers of skin
Keeps the product free of microbial growth
Neutralises free radicals from UV and pollution
Binds trace metals that would otherwise spoil the formula
Loosens or dissolves dead surface cells
Changes how skin behaves rather than how it feels
Amino-acid chains that signal for repair or firmness
Sets the acidity the formula needs to work
Every ingredient on the label, in order, with what it does and roughly how much of it is likely to be there.
1st on the list, which puts it at an estimated 10–40% of the formula.
Decamethylcyclopentasiloxane
2nd on the list, which puts it at an estimated 5–20% of the formula.
Algae Extract is an extract of various species of Algae; Extract of the Seaweed, Fucus vesiculosus, Furaceae
3rd on the list, which puts it at an estimated 5–20% of the formula.
Aqua (EU),Deionized Water,Distilled Water,Micromatrix Fractile AN,Onsen-Sui (JPN),Purified Water
4th on the list, which puts it at an estimated 2–10% of the formula.
Glycerine ;Glycerol (INN); Glycerol (RIFM); Glycerolum (EP); Glycyl Alcohol; 1,2,3-Propanetriol; 1,2,3-Trihydroxypropane
5th on the list, which puts it at an estimated 2–10% of the formula.
Dimethicone
6th on the list, which puts it at an estimated 2–10% of the formula.
1,1,1,3,5,5,5-Heptamethyl-3-(trimethylsilyloxy)trisiloxane
7th on the list, which puts it at an estimated 1–5% of the formula.
Dodecamethylcyclohexasiloxane
8th on the list, which puts it at an estimated 1–5% of the formula.
3,5,5-Trimethylhexyl 3,5,5-trimethylhexanoate
9th on the list, which puts it at an estimated 1–5% of the formula.
Cyclosiloxanes, dimethyl, polymers with dimethyl, methyl hydrogen siloxanes and vinyl-group terminated dimethylsiloxanes
10th on the list, which puts it at an estimated 1–5% of the formula.
Dimethicone/PEG-10/15 Crosspolymer is a copolymer of dimethicone crosslinked with a mixture of PEG-10 and PEG-15 diallyl ethers
11th on the list, which puts it at an estimated 1–3% of the formula.
Cetyl PEG/PPG-10/1 Dimethicone is the copolymer of Cetyl Dimethicone and an alkoxylated derivative of Dimethicone containing an average of 10 moles of ethylene oxide and 1 mole of propylene oxide
12th on the list, which puts it at an estimated 1–3% of the formula.
Siloxanes and Silicones, dodecyl methyl, 2-trimethylsilylpoly(oxydimethylsilyl)ethyl methyl, dimethyl
13th on the list, which puts it at an estimated 1–3% of the formula.
Sea Whip Extract is an extract of the marine invertebrate, Pseudopterogorgia elisabethae
14th on the list, which puts it at an estimated 1–3% of the formula.
Sesamum Indicum Seed Oil is the oil obtained from the seed of the Sesame, Sesamum indicum L., Pedaliaceae
15th on the list, which puts it at an estimated 1–3% of the formula.
Medicago Sativa Seed Powder is the powder derived from crushed seeds of the Alfa-alfa (Alfalfa), Medicago sativa L., Leguminosae
16th on the list, which puts it at an estimated 1–3% of the formula.
Helianthus Annuus Seedcake is the residue from the expression of oil from the seedcake of the Sunflower, Helianthus annuus L., Compositae
17th on the list, which puts it at an estimated 1–3% of the formula.
Prunus Amygdalus Dulcis Seed Meal is the residue from the expression of oil from the dried ripe seeds of the Sweet Almond Tree, Prunus amygdalus var. dulcis, Rosaceae
18th on the list, which puts it at an estimated 1–3% of the formula.
Eucalyptus Globulus Leaf Oil is the volatile oil obtained from the fresh leaves of the Eucaluptus, Eucalyptus globulus and other species of Eucalyptus, Myrtaceae. Syn. Yuukari Yu (Japanese)
19th on the list, which puts it at an estimated 1–3% of the formula.
Sodium gluconate
20th on the list, which puts it at an estimated 1–3% of the formula.
Copper di-D-gluconate
21st on the list, which puts it at an estimated 1–3% of the formula.
Calcium gluconate
22nd on the list, which puts it at an estimated 1–3% of the formula.
Magnesium digluconate
23rd on the list, which puts it at an estimated 1–3% of the formula.
bis(D-Gluconato-O1,O2)zinc
24th on the list, which puts it at an estimated 1–3% of the formula.
.alpha.-Tocopheryl hydrogen succinate
25th on the list, which puts it at an estimated 1–3% of the formula.
3-Pyridinecarboxylic acid
26th on the list, which puts it at an estimated 1–3% of the formula.
Sesamum Indicum Seed Powder is the powder obtained from the dried, ground seeds of the Sesame, Sesamum indicum L., Pedaliaceae
27th on the list, which puts it at an estimated 1–3% of the formula.
Decanoic acid, ester with 1,2,3-propanetriol octanoate; Glycerides, mixed decanoyl and octanoyl
28th on the list, which puts it at an estimated 1–3% of the formula.
Whey is the water dispersable part of milk that is separated from the curd in the manufacture of cheese
29th on the list, which puts it at an estimated 1–3% of the formula.
Citrus Aurantifolia Peel Extract is an extract of the peel of the Lime, Citrus aurantifolia, Rutaceae
30th on the list, which puts it at an estimated 1–3% of the formula.
Molasses is the syrup obtained as a by-product from the processing of sugarcane into sugar
31st on the list, which puts it at an estimated 1–3% of the formula.
Sigesbeckia Orientalis Extract is an extract of the leaves of the Holy Herb, Sigesbeckia orientalis L., Asteraceae
32nd on the list, which puts it at an estimated 1–3% of the formula.
Dimethicone/Vinyl Dimethicone Crosspolymer is a crosslinked dimethyl siloxane polymer (silicone elastomer) that is formed by the reaction between Hydrogen Dimethicone or Bis-Hydrogen Dimethicone, and Vinyl Dimethicone or Bis-Vinyldimethicone.
33rd on the list, which puts it at an estimated 1–3% of the formula.
Leontopodium Alpinum Extract is an extract of the whole plant of Leontopodium alpinum L., Asteraceae
34th on the list, which puts it at an estimated 1–3% of the formula.
1H-Purine-2,6-dione, 3,7-dihydro-1,3,7-trimethyl-
35th on the list, which puts it at an estimated 1–3% of the formula.
Alteromonas Ferment Extract is an extract of the fermentation product of Alteromonas macleodii
36th on the list, which puts it at an estimated 1–3% of the formula.
Chlorella Vulgaris Extract is an extract of the Alga, Chlorella vulgaris, Oocystaceae
37th on the list, which puts it at an estimated 1–3% of the formula.
3,4-Dihydro-2,5,7,8-tetramethyl-2-(4,8,12-trimethyltridecyl)-2H-benzopyran-6-yl acetate
38th on the list, which puts it at an estimated 1–3% of the formula.
Cholest-5-en-3-ol (beta)-
39th on the list, which puts it at an estimated 1–3% of the formula.
9,12-Octadecadienoic acid (9Z, 12Z)-
40th on the list, which puts it at an estimated 1–3% of the formula.
Tetraacetylphytosphingosine is the tetraester of acetic acid and Phytosphingosine (q.v.)
41st on the list, which puts it at an estimated 1–3% of the formula.
Trans-1-(1-Oxohexadecyl)-4-[(1-oxohexadecyl)oxy]-L-proline
42nd on the list, which puts it at an estimated 1–3% of the formula.
Octane-1,2-diol
43rd on the list, which puts it at an estimated 1–3% of the formula.
Triticum Vulgare Flour Lipids is a mixture of lipids derived from the flour of the Wheat, Triticum vulgare, Poaceae
44th on the list, which puts it at an estimated 1–3% of the formula.
N-acetyl-.alpha.-D-glucosamine
45th on the list, which puts it at an estimated 1–3% of the formula.
Acetyl hexapeptide-8 is the synthetic peptide consisting of arginine, methionine, and acetylated glutamic acid residues
46th on the list, which puts it at an estimated 1–3% of the formula.
Crithmum Maritimum Extract is an extract of the whole plant of the Rock Fennel, Crithmum maritimum L., Apiaceae
47th on the list, which puts it at an estimated 1–3% of the formula.
1,1'-Oxydipropan-2-ol; Oxydipropan-2-ol; Hydroxypropyloxypropanol
48th on the list, which puts it at an estimated 1–3% of the formula.
2-Methylpentane-2,4-diol
49th on the list, which puts it at an estimated 1–3% of the formula.
Laminaria Ochroleuca Extract is an extract of the Alga, Laminaria ochroleuca, Laminariaceae
50th on the list, which puts it at an estimated 1–3% of the formula.
Laminaria Digitata Extract is an extract of the Alga, Laminaria digitata, Laminariaceae
51st on the list, which puts it at an estimated 1–3% of the formula.
Saccharomyces cerevisiae
52nd on the list, which puts it at an estimated 1–3% of the formula.
Alcohol Denat. is ethyl alcohol that is denatured with one or more denaturing agents in accordance with the national legislation of each European Community (EU) country.
53rd on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Parfum is a term for ingredient labelling used to identify that a product contains a material or a combination of materials normally added to a cosmetic to produce or to mask a particular odour. According to Article 19 of the Cosmetics Regulation, 'Perfume and aromatic compositions and their raw materials shall be referred to by the terms ‘parfum’ or ‘aroma’. '
54th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Trisodium citrate
55th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
2,6-Di-tert-butyl-p-cresol
56th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
2-Phenylmethyleneoctanal; alpha-Hexylcinnamaldehyde; 2-Benzylideneoctanal; alpha-n-hexyl-beta-phenylacrolein
57th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
2-Benzylideneheptanal
58th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
1-Methyl-4-Isopropenylcyclohexene; dipentene
59th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
3,7-Dimethyl octa-1,6-diene-3-ol
60th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Coumarin; 2H-1-Benzopyran-2-one
61st on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
3,7-Dimethyl-6-octen-1-ol
62nd on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Benzyl benzoate; Phenylmethyl benzoate
63rd on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
Potassium (E,E)-hexa-2,4-dienoate
64th on the list, below the 1% line — present at under 1%, which for most ingredients is the level they work at.
2-Phenoxyethanol
Products in the same category that share this formula's distinguishing ingredients.
LA MER
Shares 9 key ingredients with The Neck and Décolleté Concentrate: Water, Dimethicone, Cyclopentasiloxane, Algae Extract, Sodium Gluconate
LA MER
Shares 8 key ingredients with The Neck and Décolleté Concentrate: Water, Dimethicone, Algae Extract, Glycerin, Sodium Gluconate
Cocoon
Shares 4 key ingredients with The Neck and Décolleté Concentrate: Water, Glycerin, Cyclopentasiloxane, Dimethicone
G9SKIN
Shares 4 key ingredients with The Neck and Décolleté Concentrate: Water, Dimethicone, Glycerin, Cyclopentasiloxane
G9SKIN
Shares 4 key ingredients with The Neck and Décolleté Concentrate: Water, Glycerin, Dimethicone, Cyclopentasiloxane
Kundal
Shares 3 key ingredients with The Neck and Décolleté Concentrate: Water, Glycerin, Dimethicone
CYCLOPENTASILOXANE, ALGAE EXTRACT, WATER, GLYCERIN, DIMETHICONE, METHYL TRIMETHICONE, CYCLOHEXASILOXANE, ISONONYL ISONONANOATE, POLYSILICONE-11, DIMETHICONE/PEG-10/15 CROSSPOLYMER, CETYL PEG/PPG-10/1 DIMETHICONE, LAURYL PEG-9 POLYDIMETHYLSILOXYETHYL DIMETHICONE, SEA WHIP EXTRACT, 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, CAPRYLIC/CAPRIC TRIGLYCERIDE, WHEY, CITRUS AURANTIFOLIA PEEL EXTRACT, MOLASSES, SIGESBECKIA ORIENTALIS EXTRACT, DIMETHICONE/VINYL DIMETHICONE CROSSPOLYMER, LEONTOPODIUM ALPINUM EXTRACT, CAFFEINE, ALTEROMONAS FERMENT EXTRACT, CHLORELLA VULGARIS EXTRACT, TOCOPHERYL ACETATE, CHOLESTEROL, LINOLEIC ACID, TETRAACETYLPHYTOSPHINGOSINE, DIPALMITOYL HYDROXYPROLINE, CAPRYLYL GLYCOL, TRITICUM VULGARE FLOUR LIPIDS, ACETYL GLUCOSAMINE, ACETYL HEXAPEPTIDE-8, CRITHMUM MARITIMUM EXTRACT, DIPROPYLENE GLYCOL, HEXYLENE GLYCOL, LAMINARIA OCHROLEUCA EXTRACT, LAMINARIA DIGITATA EXTRACT, YEAST, ALCOHOL DENAT., PARFUM, SODIUM CITRATE, BHT, HEXYL CINNAMAL, AMYL CINNAMAL, LIMONENE, LINALOOL, COUMARIN, CITRONELLOL, BENZYL BENZOATE, POTASSIUM SORBATE, PHENOXYETHANOL.
ACETYL HEXAPEPTIDE-8.
Gently smooth onto neck and décolleté then massage in upward motions morning and evening. For optimal results follow with your La Mer moisturiser.
Judged on how rich the formula reads from its ingredient list, it suits Balanced skin best. It is the least natural fit for Dry, Combination (dry), Combination (oily), Oily skin.
Some ingredients here carry irritation flags, so sensitive skin should patch test on the jawline for a few days before applying it to the whole face.
2 ingredients could feed malassezia: Sesamum Indicum Seed Oil, Eucalyptus Globulus Leaf Oil. That describes the yeast's food supply, not a prediction that they will cause a breakout.
Nothing in this formula is on the standard pregnancy-caution list. That is not medical clearance — check anything you use daily with your doctor or midwife.
No — it contains Parfum, Hexyl Cinnamal, Amyl Cinnamal, Limonene, Linalool.
Yes — it contains Alcohol Denat..
No — it contains Cyclopentasiloxane, Dimethicone, Methyl Trimethicone, Cyclohexasiloxane, Polysilicone-11.
Yes — it contains Eucalyptus Globulus Leaf Oil, Hexyl Cinnamal, Amyl Cinnamal, Limonene, Linalool.
Yes. Reading the full ingredient list, this formula is paraben-free.
It layers well with Vitamin C (L-ascorbic acid), Retinoids (retinol, retinal), AHAs (glycolic, lactic), BHA (salicylic acid), PHAs (gluconolactone), Benzoyl peroxide.
Use it morning and evening, after serums.
It lists 64 ingredients, of which 1 are recorded as actives.
LA MER.
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