RoC Vitamin C Brightening Serum for Dark Spots & Uneven Tone Review

RoC Vitamin C Brightening Serum for Dark Spots & Uneven Tone
4.8
/ 10
Moisturizing
9.6 Humectancy icon Humectancy
0.0 Occlusivity icon Occlusivity
Review

Does RoC Vitamin C Brightening Serum for Dark Spots & Uneven Tone Work?

 
According to CreamScan AI's analysis of the ingredient list, here’s what RoC Vitamin C Brightening Serum for Dark Spots & Uneven Tone has to offer:
 
✅ Strong humectant moisturizing. This lightweight, humectant-rich product, ideal for oily skin, has a moisturizing rating of 4.8 out of 10.

  

Key Benefits of RoC Vitamin C Brightening Serum for Dark Spots & Uneven Tone

 
These are the key benefits you can expect from using RoC Vitamin C Brightening Serum for Dark Spots & Uneven Tone:
 

🔵 Lightweight Purely Humectant Moisturizing, Ideal for Oily Skin

According to CreamScan analysis, RoC Vitamin C Brightening Serum for Dark Spots & Uneven Tone is quite moisturizing, with a moisturizing rating of 4.8 out of 10.

Is it more humectant or occlusive? Purely humectant. It has zero occlusivity (we didn't find any occlusive ingredients on the ingredient list) and a very high humectancy of 9.6 out of 10, primarily due to the high content of Propanediol (est. ≈6.0%) and Glycerin (est. ≈3.0%).

This humectant-rich product, when used alone as a moisturizer, is ideal for oily skin, providing significant hydration in a lightweight, fast-absorbing formula without any occlusive ingredients.

📌 Certain studies suggest that humectants alone may not effectively moisturize the skin. If you use this product as your only moisturizer, we recommend following it with one that contains at least some occlusive ingredients.

💧 A Humectant Boost for Any Skincare Routine

But it’s not limited to oily skin - such a humectant boost will also positively contribute to the moisturizing efficacy of any skincare routine when used as a step before applying the main moisturizer. This type of formulation is typically used in serums, where a light, fast-absorbing texture is key.

Please refer to the Ratings section below for details of the moisturizing rating calculation.

📌 Please note that this is not a complete list of benefits. We are in the process of enhancing our AI model to incorporate anti-pigmentation, exfoliation and anti-acne ratings.

Things to Be Aware Of: RoC Vitamin C Brightening Serum for Dark Spots & Uneven Tone

 
CreamScan AI identified a few things to consider before adding RoC Vitamin C Brightening Serum for Dark Spots & Uneven Tone to your skincare routine:
 

⚠️ If It’s Your Only Moisturizer, It Needs to Be Paired with Some Occlusives

While humectants are highly effective at attracting water to the skin, studies (J. N. Kraft, C. W. Lynde) suggest they may not be efficient when used alone.

One major drawback of purely humectant moisturization is that the water attracted by humectants to the upper layers of the skin can evaporate completely into the environment through transepidermal water loss (TEWL). Adding occlusive ingredients helps seal this moisture into the skin and prevent further water loss.

If you’re using RoC Vitamin C Brightening Serum for Dark Spots & Uneven Tone as your only moisturizer, consider pairing it with one that contains at least some occlusive ingredients, such as oils, butters, or silicones. These work alongside humectants to create a protective barrier, locking in hydration and ensuring longer-lasting moisturization. The amount of occlusive needed depends on your skin type - the drier the skin, the more occlusives it requires.

If this product is used not as a standalone moisturizer but as part of your skincare routine, such as a toner or serum, it should be applied before your main moisturizer (unless it's a sunscreen), which will provide the necessary occlusivity on top of it.

⚠️ Questionable anti-wrinkle efficacy

If one of your main reasons for choosing RoC Vitamin C Brightening Serum for Dark Spots & Uneven Tone is its potential anti-aging effects, please note that, according to CreamScan analysis, it currently has a zero anti-wrinkle rating.

It contains 3-O-Ethyl Ascorbic Acid, an ingredient often marketed as effective in reducing wrinkles. However, the studies supporting the anti-wrinkle claims of 3-O-Ethyl Ascorbic Acid provide insufficient evidence of its efficacy according to CreamScan Research Evaluation Standards.

While this does not categorically rule out the possibility that 3-O-Ethyl Ascorbic Acid may reduce wrinkles, its efficacy is not supported by convincing, vehicle-controlled, double-blind clinical studies - at least none that were available to the CreamScan team at the time of publication.

Therefore, this ingredient does not generate the anti-wrinkle rating.

📌 Moisturizers, when used regularly, are proven to prevent wrinkle formation and even reduce existing wrinkles. Therefore, this product, like any other moisturizer, can deliver some anti-wrinkle effects through its moisturizing action.

Please refer to the Ratings section below for details of the anti-wrinkle rating calculation.

Pros & Cons of RoC Vitamin C Brightening Serum for Dark Spots & Uneven Tone

 
Here’s an overview of the pros and cons of RoC Vitamin C Brightening Serum for Dark Spots & Uneven Tone to help you decide if it’s the right choice for your skincare routine:
 

🟩 Pros:

✅ When used alone: Provides humectant-rich moisturizing ideal for oily skin
✅ As part of a routine: A humectant moisturizing boost, beneficial for any skin type
✅ Lightweight texture
 

⭕ Cons: 

⚠️ Only if used as a standalone moisturizer - it needs to be paired with occlusives to seal in humectants
⚠️ Questionable anti-wrinkle efficacy
   

Summary: RoC Vitamin C Brightening Serum for Dark Spots & Uneven Tone

 
Based on the ingredient list analysis, CreamScan AI suggests that RoC Vitamin C Brightening Serum for Dark Spots & Uneven Tone
, when used alone, delivers lightweight, humectant-rich moisturizing, making it ideal for oily skin. As part of a moisturizing routine, it provides a humectant boost, beneficial for all skin types.
 
That said, there are some things about RoC Vitamin C Brightening Serum for Dark Spots & Uneven Tone worth noting.
 
Looking at its moisturizing profile, we found that it doesn’t contain any occlusive ingredients, potentially allowing the moisture attracted to the skin by humectants to evaporate. Therefore, if it’s used as the only moisturizer in a routine, it’s recommended to pair it with one that contains at least some occlusive ingredients, such as oils, butters, or silicones.
 
If one of your main reasons for considering RoC Vitamin C Brightening Serum for Dark Spots & Uneven Tone is its potential anti-aging effects, please note that, according to CreamScan analysis, its anti-wrinkle efficacy is questionable. None of the ingredients in this product provide substantial evidence of their anti-wrinkle efficacy according to CreamScan Research Evaluation Standards.
 
📌 Fact check. At CreamScan, we are committed to accuracy and fairness. If you spot any errors or something that doesn’t seem right, please click here to let us know. We regularly update the ingredient lists and monitor the latest research on ingredient efficacy to ensure that our information remains as complete and precise as possible. The information provided here is for informational purposes only and does not substitute professional advice. We do not guarantee the efficacy or safety of any product, as individual results may vary.

 

Ingredients

Est. % Ingredient Origin Functions
75
6
4
3
2
1.5
1.3
1
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.15
0.3
Est. %
Water
Function:
Origin:
Propanediol
Function:
Origin:
PPG-24-Glycereth-24
Function:
Origin:
Glycerin
Function:
Origin:
3-O-Ethyl Ascorbic Acid
Function:
Origin:
Troxerutin
Function:
Origin:
Cistus Monspeliensis Flower/Leaf/Stem Extract
Function:
Origin:
Nonapeptide-1
Function:
Origin:
Polygonum Aviculare Extract
Function:
Origin:
Terminalia Ferdinandiana Fruit Extract
Function:
Origin:
PEG-40 Hydrogenated Castor Oil
Function:
Origin:
Sodium Polyacryloyldimethyl Taurate
Function:
Origin:
PPG-26-Buteth-26
Function:
Origin:
Maltodextrin
Function:
Origin:
Caprylyl Glycol
Function:
Origin:
Potassium Sorbate
Function:
Origin:
Sodium Phosphate
Function:
Origin:
Sodium Benzoate
Function:
Origin:
1,2-Hexanediol
Function:
Origin:
Tetrasodium EDTA
Function:
Origin:
Disodium Phosphate
Function:
Origin:
Citric Acid
Function:
Origin:
Caprylhydroxamic Acid
Function:
Origin:
Fragrance
Function:
Origin:
Limonene
Function:
Origin:
Linalool
Function:
Origin:
Citral
Function:
Origin:
Yellow 6 (CI 15985)
Function:
Origin:

Ratings

All humectants
9.6
6
3
0.3
0.3
Benchmark
10
All occlusives
0.0
None
Benchmark
20
Moisturizing rating
4.8
Ingredient Est. % Benchmark Raiting
Humectancy All humectants 9.6 10
9.6
6
3
0.3
0.3
Occlusivity All occlusives 0.0 20
0.0
None
Moisturizing rating
4.8
Ingredient Est. % Benchmark Humectancy
6
3
0.3
0.3
All humectants 9.6 10
9.6
All humectants
9.6
6
3
0.3
0.3
Benchmark
10
Ingredient Est. % Benchmark Occlusivity
None
All occlusives 0.0 20
0.0
All occlusives
0.0
None
Benchmark
20
Ingredient
Ingredient anti-wrinkle power
when present at, %
in this formula est. %
Rating
n/a
- 2 -
Total
0
3-O-Ethyl Ascorbic Acid
-
Ingredient anti-wrinkle power
n/a
when present at, %
-
in this formula, est. %
2
Anti-wrinkle rating
0
Ingredient Est. % Benchmark
Rich in Antioxidants
2
0.3
All antioxidants 2.3 3 No
All antioxidants
2.3
3-O-Ethyl Ascorbic Acid
2
Terminalia Ferdinandiana Fruit Extract
0.3
Benchmark
3
Ingredient Est. % Benchmark
Rich in Soothing
None
All soothing 0 5 No
All soothing
0
None
Benchmark
5

Ingredients explained

Water
Est. %75
Function
Origin
WaterThe most used ingredient in skincare. Its concentration defines the product texture: rich creams may have about 50% of water while a light jelly about 90%. Water doesn’t moisturize the skin by itself and is used in skincare as a solvent for other ingredients.
Propanediol
Est. %6
Function
Origin
PropanediolAn excellent solvent capable of mixing water with normally water-insoluble ingredients. It also functions as a humectant due to its water-loving alcohol groups. Propanediol can control the viscosity of a product by reducing its thickness.
PPG-24-Glycereth-24
Est. %4
Function
Origin
PPG-24-Glycereth-24
Glycerin
Est. %3
Function
Origin
Glycerin

The most popular moisturizing ingredient in the world. It is a powerful humectant – cheap yet very effective.

3-O-Ethyl Ascorbic Acid
Est. %2
Function
Origin
3-O-Ethyl Ascorbic AcidA derivative of vitamin C. Its stability in skincare formulations is better than ascorbic acid’s, although clinical studies are yet to indicate whether it has the same collagen-boosting benefits.
Troxerutin
Est. %1.5
Function
Origin
Troxerutin
Cistus Monspeliensis Flower/Leaf/Stem Extract
Est. %1.3
Function
Origin
Cistus Monspeliensis Flower/Leaf/Stem Extract
Nonapeptide-1
Est. %1
Function
Origin
Nonapeptide-1
Polygonum Aviculare Extract
Est. %0.3
Function
Origin
Polygonum Aviculare Extract
Terminalia Ferdinandiana Fruit Extract
Est. %0.3
Function
Origin
Terminalia Ferdinandiana Fruit ExtractExtracted from the fruits of the Kakadu plum (which is the richest source of vitamin C among all plants) this ingredient acts as an excellent antioxidant. Besides this, it is also an antimicrobial agent with some humectant properties.
PEG-40 Hydrogenated Castor Oil
Est. %0.3
Function
Origin
PEG-40 Hydrogenated Castor OilA castor oil-derived ingredient often used to incorporate small amounts of oil (such as a fragrance) into a water-based product. PEG-4 HCO is a gold-standard solubilizer and can be used in low amounts due to its ability to solubilize things so well.
Sodium Polyacryloyldimethyl Taurate
Est. %0.3
Function
Origin
Sodium Polyacryloyldimethyl Taurate
PPG-26-Buteth-26
Est. %0.3
Function
Origin
PPG-26-Buteth-26A water-loving surfactant, which means it can act as an emulsifier, solubilizer, and cleansing agent. As an emulsifier, it helps to create oil-in-water emulsions.
Maltodextrin
Est. %0.3
Function
Origin
MaltodextrinA formula helper manufactured from starch. It has a sweet flavor and is often used in rinse-off products to support their foaming structure. Maltodextrin is also used to stabilize emulsions and to absorb and bind other ingredients in the formula.
Caprylyl Glycol
Est. %0.3
Function
Origin
Caprylyl GlycolAn emollient that improves product spreadability and offers a silky feel on the skin. It also acts as a preservative booster that improves the efficacy of other preservatives. According to the manufacturer, it is also a humectant moisturizer.
Potassium Sorbate
Est. %0.3
Function
Origin
Potassium SorbateA preservative widely used in food and personal care products, available from natural sources or synthetically produced. Potassium sorbate works by inhibiting the growth of yeasts, molds, and some bacteria.
Sodium Phosphate
Est. %0.3
Function
Origin
Sodium PhosphateA sodium salt of phosphoric acid that increases pH.
Sodium Benzoate
Est. %0.3
Function
Origin
Sodium BenzoateA preservative that usually works in combination with other preservatives. It has to be at low pH (<5.5) to be effective.
1,2-Hexanediol
Est. %0.3
Function
Origin
1,2-HexanediolA multi-functional formula helper. It is a well-studied preservtive against bacteria and can help pigments and fragrances disperse evenly in a formula.
Tetrasodium EDTA
Est. %0.3
Function
Origin
Tetrasodium EDTAOne of the most common synthetic chelators. It can reduce the 'hardness' of water and so is often used in rinse-off products.
Disodium Phosphate
Est. %0.3
Function
Origin
Disodium PhosphateAn inorganic ingredient primarily used in skincare products as a pH adjuster.
Citric Acid
Est. %0.3
Function
Origin
Citric AcidA gently exfoliating AHA that helps to remove the top layer of dead skin cells. In comparison to other AHAs, citric acid has been shown to be one of the least effective. It is also very commonly used as a stabilizing and pH-controlling agent.
Caprylhydroxamic Acid
Est. %0.3
Function
Origin
Caprylhydroxamic AcidA chelating agent used alongside preservatives in order to boost their antimicrobial activity.
Fragrance
Est. %0.3
Function
Origin
FragranceUnder trade secret law, manufacturers have the right not to disclose what exactly went into the fragrance and use the unspecific word Fragrance or Parfum instead. Many fragrances are highly allergenic.
Limonene
Est. %0.3
Function
Origin
Limonene

One of the most used fragrances in skincare products. It is produced from the peels of citrus fruits and has a fresh, pleasant, citrusy smell. People who are sensitive to citrus should try to avoid it, or at least do a patch test before using it.

Linalool
Est. %0.3
Function
Origin
LinaloolA fragrant, volatile compound naturally present in many essential oils. It has a pleasant scent and is often used in skincare products as a fragrance. People with sensitive skin should try to avoid it, or at least do a patch test before using it.
Citral
Est. %0.15
Function
Origin
Citral

A fragrant compound found in many essential oils (especially lemon myrtle and lemongrass essential oil). It has a sweet, lemon-like scent. People with sensitive skin should try to avoid products with citral, or at least do a patch test before using.

Yellow 6 (CI 15985)
Est. %0.3
Function
Origin
Yellow 6 (CI 15985)A petroleum-derived reddish-yellow dye, also known as Sunset Yellow. It is the third most used pigment in food, cosmetics, and drugs.