Dr Dennis Gross C+Collagen Biocellulose Brightening Treatment Mask

Dr Dennis Gross C+Collagen Biocellulose Brightening Treatment Mask

Efficacy100/100IrritancyHigh

Works for

Moisturizing
Niacinamide, Glycerin + 5 more
Works well
What the product description says
“In just 15 minutes, lacklustre skin will have regained its natural glow and will feel deeply nourished, supple, dewy and plump with moisture.”
Source: Lookfantastic

This product contains good ingredients to attract water to the upper layer of the skin. These ingredients are called "humectants": glycerin.

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. If the air is dry, humectants can speed up the moisture loss from the skin. This is why it is a good idea to use another product on top of this one to help "seal in" the moisture (look for ingredients like dimethicone, squalane, oils and butters).

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

NiacinamideHeroEffect: HighIs proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production~2–3%
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~4.1–6.1%
Collagen amino acidsKey activeEffect: HighHelp attract water to the upper layer of the skin, soften it and support the skin barrier function~1.6–2.4%
Superoxide dismutaseKey activeEffect: HighAn antioxidant enzyme that is naturally present in skin. It can help support skin barrier function and reduce inflammation in skin. It is used in topical medications for inflammatory skin conditions including atopic dermatitis (eczema) and psoriasis. There are three types of natural Superoxide Dismutase in human skin. The compound used in topical treatments and cosmetics are mimics of typically one of these natural variants~1.3–1.9%
UbiquinoneKey activeEffect: HighCoenzyme Q10. It helps neutralize free radicals in skin, improves skin hydration and might be helpful agains fine lines and wrinkles. It can be an allergen~1.1–1.7%
Ascophyllum nodosum extractKey activeEffect: HighBrown seaweed extract. Can help attract water to the upper layer of the skin and might have some antioxidant effect~0.9–1.4%
Pentylene glycol· EmollientEffect: LowUsed to preserve products, dissolve other ingredients and create a nice product texture~3.7–5.5%
Evens skin tone
Ascorbic acid, Niacinamide
Works well
What the product description says
“Reignite skin’s luminosity with the Dr Dennis Gross Skincare Skincare C+Collagen Biocellulose Brightening Treatment Mask ; a 100% natural and biodegradable biocellulose mask that helps repair and instantly brighten dull, dry, damaged skin.”
Source: Lookfantastic

This product can help reduce hypepigmentation and even out the skin tone because it contains the following effective ingredients: ascorbic acid.

In addition, this product contains niacinamide. This ingredient (ingredients) might help reduce hyperpigmentation, but the effect, if any, is likely to be small.

Keep in mind that you would need to apply any topical skincare targetted at hypigmentation consistently for a couple of months to get a result. No topical skincare product can help get rid of hyperpigmentation (including post-acne marks and age spots) instantly.

Ascorbic acidHeroEffect: HighThe most well-researched antioxidant that works in skin. Helps neutralize free radicals supporting collagen production, helping to even out the skin tone and preventing early signs of aging~2.8–4.1%
NiacinamideKey activeEffect: HighIs proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production~2–3%
Anti-oxidation
Not advertised by the brand · Ascorbic acid, Superoxide dismutase + 2 more
Works well

This product contains antioxidants (ascorbic acid, superoxide dismutase, ubiquinone) that can help neutralize free radicals in skin. By doing so, they can lessen the damage the skin gets from the UV light (sun).

Ascorbic acidHeroEffect: HighThe most well-researched antioxidant that works in skin. Helps neutralize free radicals supporting collagen production, helping to even out the skin tone and preventing early signs of aging~2.8–4.1%
Superoxide dismutaseKey activeEffect: HighAn antioxidant enzyme that is naturally present in skin. It can help support skin barrier function and reduce inflammation in skin. It is used in topical medications for inflammatory skin conditions including atopic dermatitis (eczema) and psoriasis. There are three types of natural Superoxide Dismutase in human skin. The compound used in topical treatments and cosmetics are mimics of typically one of these natural variants~1.3–1.9%
UbiquinoneKey activeEffect: HighCoenzyme Q10. It helps neutralize free radicals in skin, improves skin hydration and might be helpful agains fine lines and wrinkles. It can be an allergen~1.1–1.7%
Ascophyllum nodosum extractEffect: LowBrown seaweed extract. Can help attract water to the upper layer of the skin and might have some antioxidant effect~0.9–1.4%
Anti-aging
Side benefit the brand mentions · Ascorbic acid, Niacinamide + 1 more
Works well
What the product description says
“Part of the brands much-loved C+Collagen range, this powerful sheet mask is supercharged with vitamin C and collagen amino acids, along with a whole host of other powerful nutrients like skin barrier-supporting niacinamide and hydrating glycerine which combine to deeply nourish your complexion, brighten, even skin tone and reduce fine lines and wrinkles after just 15 minutes!”
Source: Cultbeauty

This product can help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness because it contains ascorbic acid, niacinamide.

Keep in mind that it typically takes at least 6 weeks to notice any results because the changes that are needed to improve fine lines and elasticity happen in the deeper layers of the skin. No topical anti-aging product can “erase” wrinkles or fully reverse signs of aging.

Ascorbic acidHeroEffect: HighThe most well-researched antioxidant that works in skin. Helps neutralize free radicals supporting collagen production, helping to even out the skin tone and preventing early signs of aging~2.8–4.1%
NiacinamideKey activeEffect: HighIs proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production~2–3%
UbiquinoneEffect: LowCoenzyme Q10. It helps neutralize free radicals in skin, improves skin hydration and might be helpful agains fine lines and wrinkles. It can be an allergen~1.1–1.7%
Anti-blemish
Not advertised by the brand · Niacinamide
Works well

This product can help reduce breakouts and clogged pores because it contains the following ingredient: niacinamide. This ingredient is used for treating acne and can have a noticeable effect.

NiacinamideHeroEffect: HighIs proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production~2–3%

Can it cause trouble?

Irritancy
5 strong irritants: Citrus limon fruit extract, Citrus aurantium bergamia fruit oil + 3 more — patch-test recommended
High risk
We flagged 10 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
Ascorbic acidThe most well-researched antioxidant that works in skin. Helps neutralize free radicals supporting collagen production, helping to even out the skin tone and preventing early signs of agingHigh~2.8–4.1%est.
Citrus limon fruit extractUsed as a fragrance. Can be irritating and cause photosensitivityHigh~0.6–1.4%est.
Citrus aurantium bergamia fruit oilA plant oil with a high content of volatile compounds that can irritate the skin and lead to allergic reactions. Can lead to photosensitivityHigh~0.1–0.35%est.
LinaloolA fragrance. Can be irritatingHigh~0.05–0.25%est.
CitralA fragrance with a lemon scent. A likely irritantHigh~0.05–0.2%est.
LimoneneA common frangrance that can easily irritate skin, especially if exposed to air, light or heatHigh~0.05–0.15%est.
Pentylene glycolUsed to preserve products, dissolve other ingredients and create a nice product textureMedium~3.7–5.5%est.
Leuconostoc/radish root ferment filtrateA preservative that comes from radishes fermented by a bacteria. New research suggests that the preservation properties in the ingredient come from an ammonium salt that is not present naturally in radish root but used in its cultivation. Is problematic because the exact amount of the preservative agents is difficult to determineMedium~0.5–1.15%est.
Citric acidCan work as an exfoliant but is typically used to adjust the product pHMedium~0.4–0.95%est.
Potassium sorbateA preservativeMedium~0.05–0.2%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~40–60%
Formula
Irritation risk
Low

Plain old water

More about Water
Glycerin~4.1–6.1%
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
Pentylene glycol~3.7–5.5%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

Used to preserve products, dissolve other ingredients and create a nice product texture

More about Pentylene glycol
Ascorbic acid~2.8–4.1%
Hero · Anti-aging, Anti-oxidation, Evens skin toneIrritant · high
Irritation risk
High
Works for
Evens skin toneAnti-agingAnti-oxidation

The most well-researched antioxidant that works in skin. Helps neutralize free radicals supporting collagen production, helping to even out the skin tone and preventing early signs of aging

More about Ascorbic acid
Niacinamide~2–3%
Hero · Moisturizing, Anti-blemish
Irritation risk
Low
Works for
Evens skin toneAnti-agingMoisturizingAnti-blemishReduces irritationAntibacterialAnti-inflammatoryReduces redness

Is proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production

More about Niacinamide
Collagen amino acids~1.6–2.4%
Key active
Irritation risk
Low
Works for
Moisturizing

Help attract water to the upper layer of the skin, soften it and support the skin barrier function

More about Collagen amino acids
Superoxide dismutase~1.3–1.9%
Key active
Irritation risk
Low
Works for
Anti-oxidationAnti-inflammatoryMoisturizing

An antioxidant enzyme that is naturally present in skin. It can help support skin barrier function and reduce inflammation in skin. It is used in topical medications for inflammatory skin conditions including atopic dermatitis (eczema) and psoriasis. There are three types of natural Superoxide Dismutase in human skin. The compound used in topical treatments and cosmetics are mimics of typically one of these natural variants

More about Superoxide dismutase
Ubiquinone~1.1–1.7%
Key active
Irritation risk
Low
Works for
MoisturizingAnti-oxidationAnti-aging

Coenzyme Q10. It helps neutralize free radicals in skin, improves skin hydration and might be helpful agains fine lines and wrinkles. It can be an allergen

More about Ubiquinone
Ascophyllum nodosum extract~0.9–1.4%
Key active
Irritation risk
Low
Works for
MoisturizingAnti-oxidation

Brown seaweed extract. Can help attract water to the upper layer of the skin and might have some antioxidant effect

More about Ascophyllum nodosum extract
Citrus limon fruit extract~0.6–1.4%
Irritant · high
Irritation risk
High

Used as a fragrance. Can be irritating and cause photosensitivity

More about Citrus limon fruit extract
Leuconostoc/radish root ferment filtrate~0.5–1.15%
Irritant · medium
Irritation risk
Medium

A preservative that comes from radishes fermented by a bacteria. New research suggests that the preservation properties in the ingredient come from an ammonium salt that is not present naturally in radish root but used in its cultivation. Is problematic because the exact amount of the preservative agents is difficult to determine

More about Leuconostoc/radish root ferment filtrate
Citric acid~0.4–0.95%
Irritant · medium
Irritation risk
Medium

Can work as an exfoliant but is typically used to adjust the product pH

More about Citric acid
Tetrasodium glutamate diacetate~0.35–0.8%
Formula
Irritation risk
Low

Helps stabilize the product formulation

More about Tetrasodium glutamate diacetate
Xanthan gum~0.2–0.8%
Formula
Irritation risk
Low
Works for
Cleansing

Used to create a thicker product consistency

More about Xanthan gum
Polysorbate 20~0.15–0.7%
Formula
Irritation risk
Low
Works for
Cleansing

Helps oil and water mix together

More about Polysorbate 20
Sodium hydroxide~0.15–0.55%
Formula
Irritation risk
Low

Used to adjust the product's pH

More about Sodium hydroxide
Citrus aurantium bergamia fruit oil~0.1–0.35%
Irritant · high
Irritation risk
High

A plant oil with a high content of volatile compounds that can irritate the skin and lead to allergic reactions. Can lead to photosensitivity

More about Citrus aurantium bergamia fruit oil
Linalool~0.05–0.25%
Irritant · high
Irritation risk
High

A fragrance. Can be irritating

More about Linalool
Citral~0.05–0.2%
Irritant · high
Irritation risk
High

A fragrance with a lemon scent. A likely irritant

More about Citral
Limonene~0.05–0.15%
Irritant · high
Irritation risk
High

A common frangrance that can easily irritate skin, especially if exposed to air, light or heat

More about Limonene
Potassium sorbate~0.05–0.2%
Irritant · medium
Irritation risk
Medium

A preservative

More about Potassium sorbate
Sodium benzoate~0.05–0.15%
Formula
Irritation risk
Low

A preservative

More about Sodium benzoate
Ingredient list view

Water, Glycerin, Pentylene glycol, Ascorbic acid, Niacinamide, Collagen amino acids, Superoxide dismutase, Ubiquinone, Ascophyllum nodosum extract, Citrus limon fruit extract, Leuconostoc/radish root ferment filtrate, Citric acid, Tetrasodium glutamate diacetate, Xanthan gum, Polysorbate 20, Sodium hydroxide, Citrus aurantium bergamia fruit oil, Linalool, Citral, Limonene, Potassium sorbate, Sodium benzoate

Compare prices

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🌐 Sephora Hong Kong (HK)
≈ $15.95
Buy
🇬🇧 Lookfantastic (UK)
≈ $22.75 Out of stock
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🇬🇧 Mankind (UK)
≈ $22.75 Out of stock
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🇬🇧 SpaceNK (UK)
≈ $22.75
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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
Dr Dennis GrossC+Collagen Biocellulose Brightening Treatment MaskYOUR PRODUCTSaturday SkinYuzu Vitamin C Sleep MaskInstitutQuick-Fix Calming Sheet MaskSkinstitutQuick-Fix Calming Sheet Mask
Match—78%65%65%
Price—$17.89——
Shared key ingredients—2 of 73 of 73 of 7
Key difference—RetinolBisabololBisabolol
Irritancy High High Medium Medium
Drying alcohol————
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Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 13 studies and safety reviews.

  1. 1
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  3. 3
  4. 4
  5. 5
  6. 6
Dr Dennis Gross C+Collagen Biocellulose Brightening Treatment Mask
Dr Dennis GrossC+Collagen Biocellulose Brightening Treatment Mask

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

As an Amazon Associate, WIMJ earns from qualifying purchases.