CULT51 Neck & Decollete Firming Cream

CULT51 Neck & Decollete Firming Cream

Efficacy50/100IrritancyHigh
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Works for

1 of 3 advertised claims delivered

Moisturizing
9 ingredients credited for this claim
Strong support
What the product description says
“Neck & Decollete Firming Cream”
From product name

This product can help improve hydration of the skin with the two types of ingredients.

The first type is called “humectants”:
these ingredients help attract water. When humectants are on the surface of the skin, they “pull in” the moisture from the outside environment, or from within deeper layers of the skin. The following ingredients in this product do the job: glycerin, soluble collagen.

This product also contains ingredients called “occlusives”. They help reduce the speed with which our skin loses moisture to the outside environment. These ingredients also help soften the upper layer of the skin, so it feels less tight and nicer to the touch. The following ingredients in this product do the job: dimethicone, cyclopentasiloxane.

The following ingredients in this product are especially good for supporting the skin barrier and helping with the hydration level: panthenol

GlycerinKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant~3–3.7%
Peg/ppg-18/18 dimethiconeKey activeEffect: HighA silicone that mixes with water creating nice light-weight product texture~0.25–0.45%
Soluble collagenKey active· HumectantEffect: HighA typically plant-derived compound that is supposed mimic human collagen. Cannot penetrate the skin barrier so is not particularly useful in skincare products beyond attracting water to the upper layer of the skin~2.3–2.8%
DimethiconeKey active· Emollient, OcclusiveEffect: HighA silicone that helps to reduce water loss from the surface of the skin. Can temporarily "fill in" lines and wrinkles, absorb oil, and create a nice product finish~2–2.4%
PanthenolHero· HumectantEffect: HighHelps attract water to the upper layer of the skin and can help improve skin barrier function~0.35–0.65%
CyclopentasiloxaneKey active· EmollientEffect: MediumA silicone that helps improve the product texture and spreadability. Can absorb oil creating a short-term mattifying effect on the skin~0.45–0.7%
Butylene glycol· HumectantEffect: LowUsed to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin~6.3–7.7%
Centella asiatica extractUnder-dosedEffect: HighA plant extract that has been shown to be able to reduce inflammation in skin, support restoration of skin barrier function, as well as support collagen production. Contains active compounds called centelloids: asiaticoside, madecasosside, asiatic acid and madecassic acid. Might be helpful in preventing stretch marks. It can be itself be irritating though.~0.25–0.5%
Camellia sinensis leaf extractEffect: Low, below effective doseCan contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation~0.3–0.5%
Anti-aging
3 ingredients credited for this claim
Limited support
What the product description says
“The highly advanced skincare formula with an immediate invigorating lift effect, works to revitalise and smooth the delicate skin around your neck and décolleté, allowing skin to instantly look more youthful and feel firmer.”
Source: Face the future

This product does not contain ingredients that are able to reduce fine lines and wrinkles or help with skin elasticity, but it can improve the look of the skin temporarily through moisturization. Well-moisturized skin might also be able to repair the sun damage better.

Centella asiatica extractUnder-dosedEffect: MediumA plant extract that has been shown to be able to reduce inflammation in skin, support restoration of skin barrier function, as well as support collagen production. Contains active compounds called centelloids: asiaticoside, madecasosside, asiatic acid and madecassic acid. Might be helpful in preventing stretch marks. It can be itself be irritating though.~0.25–0.5%
Sodium ascorbyl phosphateEffect: Low, below effective doseA stable derivative of vitamin C. It is oil-soluble which means it is more likely to penetrate the skin compared to the pure form of vitamin C (which is water-soluble), but it is less bio-available and is way less effective in stimulating collagen and reducing wrinkles compared to the pure form of vitamin C (L-ascorbic acid) and its other derivatives (for example, magnesium ascorbyl phosphate). At the same time, this vitamin C derivative has been shown in studies to be effective in reducing acne, blemishes and clogged pores. It is less irritating then the pure form of vitamin C~1.1–1.3%
Camellia sinensis leaf extractEffect: Low, below effective doseCan contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation~0.3–0.5%
Evens skin tone
1 ingredient credited for this claim
Weak support
What the product description says
“The formula supports natural collagen production for a more toned appearance, whilst also smoothing out fine lines and wrinkles and brightening the skin tone.”
Source: Lookfantastic

Effective ingredients missing or their concentration is too low

Camellia sinensis leaf extractEffect: Low, below effective doseCan contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation~0.3–0.5%

Can it cause trouble?

Irritancy
3 strong irritants: Alcohol denat., Parfum + 1 more — patch-test recommended
High risk
We flagged 13 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
Alcohol denat.Produces temporary toning effect. Can help dissolve other ingredients or preserve productsHigh~4.4–5.4%est.
Benzyl alcoholA preservative. Can be used to mask unpleasant smell. Can be irritatingHigh~0.55–0.85%est.
ParfumAn aromatic blend of unspecified and possibly irritating ingredientsHigh~0.3–0.6%est.
EscinA compound obtained from horse chestnut. It is claimed that this chemical can improve circulation, but there is no evidence available that it works in skinHigh~0.25–0.4%est.
Calendula officinalis flower extractA plant extract that has some anti-oxidant and anti-bacterial properties. Can be irritatingHigh~0.1–0.2%est.
Sodium ascorbyl phosphateA stable derivative of vitamin C. It is oil-soluble which means it is more likely to penetrate the skin compared to the pure form of vitamin C (which is water-soluble), but it is less bio-available and is way less effective in stimulating collagen and reducing wrinkles compared to the pure form of vitamin C (L-ascorbic acid) and its other derivatives (for example, magnesium ascorbyl phosphate). At the same time, this vitamin C derivative has been shown in studies to be effective in reducing acne, blemishes and clogged pores. It is less irritating then the pure form of vitamin CMedium~1.1–1.3%est.
CaffeineMight be helpful in neutralizing free radicals. Can have a dehydration effect that might somewhat decrease the look of puffy eyesMedium~0.5–0.8%est.
Acrylates/c10-30 alkyl acrylate crosspolymerMaintains the texture of skincare products. Allows the product to spread evenly. Helps oil and water mix togetherMedium~0.5–0.75%est.
Sodium cocoyl glutamateHelps oil and water mix togetherMedium~0.5–0.7%est.
Dehydroacetic acidA preservativeMedium~0.2–0.4%est.
Centella asiatica extractA plant extract that has been shown to be able to reduce inflammation in skin, support restoration of skin barrier function, as well as support collagen production. Contains active compounds called centelloids: asiaticoside, madecasosside, asiatic acid and madecassic acid. Might be helpful in preventing stretch marks. It can be itself be irritating though.Medium~0.25–0.5%est.
ChlorphenesinA preservativeMedium~0.15–0.25%est.
Potassium sorbateA preservativeMedium~0.1–0.2%est.
Comedogenic
Clean of flagged comedogenic ingredients
None flagged
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Ingredients

Filter by role to see what each ingredient is doing.

Water~45–55%
Formula
Irritation risk
Low

Plain old water

More about Water
Butylene glycol~6.3–7.7%
Formula
Irritation risk
Low
Works for
Moisturizing

Used to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin

More about Butylene glycol
Alcohol denat.~4.4–5.4%
Irritant · high
Irritation risk
High

Produces temporary toning effect. Can help dissolve other ingredients or preserve products

More about Alcohol denat.
Glycerin~3–3.7%
Key active
Irritation risk
Low
Works for
Moisturizing

One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant

More about Glycerin
Soluble collagen~2.3–2.8%
Key active
Irritation risk
Low
Works for
Moisturizing

A typically plant-derived compound that is supposed mimic human collagen. Cannot penetrate the skin barrier so is not particularly useful in skincare products beyond attracting water to the upper layer of the skin

More about Soluble collagen
Dimethicone~2–2.4%
Key active
Irritation risk
Low
Works for
MoisturizingMattifying

A silicone that helps to reduce water loss from the surface of the skin. Can temporarily "fill in" lines and wrinkles, absorb oil, and create a nice product finish

More about Dimethicone
Argania spinosa kernel extract~1.6–1.9%
Formula
Sodium polyacrylate~1.5–1.8%
Formula
Irritation risk
Low
Works for
Mattifying

Used to create a gel-like product texture, as well as to stabilize emulsions

More about Sodium polyacrylate
Sodium ascorbyl phosphate~1.1–1.3%
Irritant · medium
Irritation risk
Medium
Works for
Anti-blemishAnti-oxidationAnti-aging

A stable derivative of vitamin C. It is oil-soluble which means it is more likely to penetrate the skin compared to the pure form of vitamin C (which is water-soluble), but it is less bio-available and is way less effective in stimulating collagen and reducing wrinkles compared to the pure form of vitamin C (L-ascorbic acid) and its other derivatives (for example, magnesium ascorbyl phosphate). At the same time, this vitamin C derivative has been shown in studies to be effective in reducing acne, blemishes and clogged pores. It is less irritating then the pure form of vitamin C

More about Sodium ascorbyl phosphate
Methyl gluceth-10~0.9–1.1%
Formula
Irritation risk
Low
Works for
Cleansing
More about Methyl gluceth-10
Benzyl alcohol~0.55–0.85%
Irritant · high
Irritation risk
High

A preservative. Can be used to mask unpleasant smell. Can be irritating

More about Benzyl alcohol
Caffeine~0.5–0.8%
Irritant · medium
Irritation risk
Medium
Works for
De-puffingAnti-oxidation

Might be helpful in neutralizing free radicals. Can have a dehydration effect that might somewhat decrease the look of puffy eyes

More about Caffeine
Acrylates/c10-30 alkyl acrylate crosspolymer~0.5–0.75%
Irritant · medium
Irritation risk
Medium

Maintains the texture of skincare products. Allows the product to spread evenly. Helps oil and water mix together

More about Acrylates/c10-30 alkyl acrylate crosspolymer
Cyclopentasiloxane~0.45–0.7%
Key active
Irritation risk
Low
Works for
MoisturizingMattifying

A silicone that helps improve the product texture and spreadability. Can absorb oil creating a short-term mattifying effect on the skin

More about Cyclopentasiloxane
Panthenol~0.35–0.65%
Hero · Moisturizing
Irritation risk
Low
Works for
MoisturizingReduces rednessReduces irritation

Helps attract water to the upper layer of the skin and can help improve skin barrier function

More about Panthenol
Parfum~0.3–0.6%
Irritant · high
Irritation risk
High

An aromatic blend of unspecified and possibly irritating ingredients

More about Parfum
Titanium dioxide~0.5–0.75%
Formula
Irritation risk
Low
Works for
Sun protection

Works as a UV filter when used in high concentrations. It is photostable and is effective mostly against the UVB light, with some protection in the UVA range. In small concentrations, used for its ability to improve the color of cosmetic products. Is usually well tolerated by the skin

More about Titanium dioxide
Trideceth-6~0.3–0.6%
Formula
Irritation risk
Low
Works for
Cleansing

Helps oil and water mix together

More about Trideceth-6
Camellia sinensis leaf extract~0.3–0.5%
Formula
Irritation risk
Low
Works for
AntibacterialAnti-oxidationAnti-agingAnti-blemishMoisturizingEvens skin tone

Can contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation

More about Camellia sinensis leaf extract
Sodium cocoyl glutamate~0.5–0.7%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps oil and water mix together

More about Sodium cocoyl glutamate
Phenoxyethanol~0.25–0.45%
Formula
Irritation risk
Low

A preservative. It helps prevent bacterial growth in cosmetic products

More about Phenoxyethanol
Escin~0.25–0.4%
Irritant · high
Irritation risk
High
Works for
Anti-oxidation

A compound obtained from horse chestnut. It is claimed that this chemical can improve circulation, but there is no evidence available that it works in skin

More about Escin
Dehydroacetic acid~0.2–0.4%
Irritant · medium
Irritation risk
Medium

A preservative

More about Dehydroacetic acid
Ruscus aculeatus root extract~0.2–0.35%
Formula
Peg/ppg-18/18 dimethicone~0.25–0.45%
Key active
Irritation risk
Low
Works for
MoisturizingCleansing

A silicone that mixes with water creating nice light-weight product texture

More about Peg/ppg-18/18 dimethicone
Carbomer~0.2–0.4%
Formula
Irritation risk
Low
Works for
Cleansing

Helps create a thicker or gel-like product texture. It is not a surfactant but can be used in gentle cleansing formulations

More about Carbomer
Ammonium glycyrrhizate~0.2–0.4%
Formula
Centella asiatica extract~0.25–0.5%
Under-dosedIrritant · medium
Irritation risk
Medium
Works for
MoisturizingReduces irritationReduces rednessAnti-inflammatoryAnti-oxidationAnti-agingAnti-blemish

A plant extract that has been shown to be able to reduce inflammation in skin, support restoration of skin barrier function, as well as support collagen production. Contains active compounds called centelloids: asiaticoside, madecasosside, asiatic acid and madecassic acid. Might be helpful in preventing stretch marks. It can be itself be irritating though.

More about Centella asiatica extract
Chlorphenesin~0.15–0.25%
Irritant · medium
Irritation risk
Medium

A preservative

More about Chlorphenesin
Hydrolyzed yeast protein~0.15–0.3%
Formula
Calendula officinalis flower extract~0.1–0.2%
Irritant · high
Irritation risk
High
Works for
Anti-oxidation

A plant extract that has some anti-oxidant and anti-bacterial properties. Can be irritating

More about Calendula officinalis flower extract
Methylparaben~0.1–0.2%
Formula
Irritation risk
Low

A preservative

More about Methylparaben
Potassium sorbate~0.1–0.2%
Irritant · medium
Irritation risk
Medium

A preservative

More about Potassium sorbate
Sodium benzoate~0.1–0.15%
Formula
Irritation risk
Low

A preservative

More about Sodium benzoate
Sodium hydroxide~0.05–0.1%
Formula
Irritation risk
Low

Used to adjust the product's pH

More about Sodium hydroxide
Ingredient list view

Water, Butylene glycol, Alcohol denat., Glycerin, Soluble collagen, Dimethicone, Argania spinosa kernel extract, Sodium polyacrylate, Sodium ascorbyl phosphate, Methyl gluceth-10, Benzyl alcohol, Caffeine, Acrylates/c10-30 alkyl acrylate crosspolymer, Cyclopentasiloxane, Panthenol, Parfum, Titanium dioxide, Trideceth-6, Camellia sinensis leaf extract, Sodium cocoyl glutamate, Phenoxyethanol, Escin, Dehydroacetic acid, Ruscus aculeatus root extract, Peg/ppg-18/18 dimethicone, Carbomer, Ammonium glycyrrhizate, Centella asiatica extract, Chlorphenesin, Hydrolyzed yeast protein, Calendula officinalis flower extract, Methylparaben, Potassium sorbate, Sodium benzoate, Sodium hydroxide

Compare prices

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Amazon USPrice as of 10/16/2026 00:12 GMT
$37.23
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Lookfantastic US
$62.10
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Worth comparing, line by line.

Match % combines shared ingredients, the first five ingredients, shared actives and hero ingredients, irritancy (lower counts in the alternative's favour), texture and body area. Only products in the same routine step are compared.

Side-by-side comparison of this product against its closest alternatives
CULT51Neck & Decollete Firming CreamYOUR PRODUCTOlayFace Moisturizer
Match—50%
Price$37.23$26.99−$10.24
Shared key ingredients—6 of 12
Key difference—Niacinamide
Irritancy High Medium
Drying alcohol Contains drying alcohol —
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Product summary

"CULT51 - Neck & Decollete Firming Cream" is a well-rounded moisturizing product. As we expect from a proper moisturizer, the formula includes a combo of effective humectants and emollients. These are the two different types of ingredients that are essential for improving the skin hydration and supporting a healthy skin barrier. Panthenol, glycerin, soluble collagen and butylene glycol in this product (humectants) attract water molecules to the upper layer of the skin (the water comes from the outside air or from the deeper layers of the skin if the air is dry). Emollients in this formulation (dimethicone and cyclopentasiloxane) help to reduce the moisture loss from the skin. They also soften the skin surface and relieve the feeling of dryness and tightness.

Irritation risk

This moisturizer contains a bunch of common irritants, including ingredients that do not provide any known benefit for the skin. It might not be the best choice if your skin is sensitive. We assess the overall irritancy of this moisturizer to be high. For a detailed overview of all potential irritants: click here

You can see the detailed formula review with the breakdown of all actives in the product and the full ingredient list with estimated concentrations in the tables below.

Price

The product retails from 30.62$ up to 62.10$ in the United States and from 45.00£ up to 90.00£ in the United Kingdom.

For a detailed price comparison: click here.

Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 26 studies and safety reviews.

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CULT51 Neck & Decollete Firming Cream
CULT51Neck & Decollete Firming Cream

Affiliate links · As an Amazon Associate, WIMJ earns from qualifying purchases.

As an Amazon Associate, WIMJ earns from qualifying purchases.