Circadia Vitamin C Reversal Serum Review

Circadia Vitamin C Reversal Serum
5.0
/ 10
Moisturizing
10.0 Humectancy icon Humectancy
0.0 Occlusivity icon Occlusivity
Rich
in Antioxidants
Ingredients

Circadia Vitamin C Reversal Serum Ingredients

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Full Ingredient List (INCI):

Water, Magnesium Ascorbyl Phosphate, Pentylene Glycol, Sodium Hyaluronate, Panthenol, Caprylyl Glycol, Phenoxyethanol, Hexylene Glycol
Review

Does Circadia Vitamin C Reversal Serum Work?

 
According to CreamScan's analysis of the ingredient list, here’s what Circadia Vitamin C Reversal Serum has to offer:
 
✅ Strong humectant moisturizing. This lightweight, humectant-rich product, ideal for oily skin, has a moisturizing rating of 5.0 out of 10.
✅ Antioxidant protection

  

Key Benefits of Circadia Vitamin C Reversal Serum

 
These are the key benefits you can expect from using Circadia Vitamin C Reversal Serum:
 

🔵 Lightweight Purely Humectant Moisturizing, Ideal for Oily Skin

According to CreamScan analysis, Circadia Vitamin C Reversal Serum is quite moisturizing, with a moisturizing rating of 5.0 out of 10.

Is it more humectant or occlusive? It is purely humectant. It has zero occlusivity (we didn't find any occlusive ingredients on the ingredient list) and a maximum humectancy of 10 out of 10, primarily due to the high content of Pentylene Glycol (est. ≈4.0%), Sodium Hyaluronate (est. ≈2.5%) and Panthenol (est. ≈2.0%).

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.

🍀 Rich in Skin-Protecting Antioxidants

We estimate that Circadia Vitamin C Reversal Serum is rich (> 3%) in antioxidants, specifically Magnesium Ascorbyl Phosphate (est. ≈6.0%) and Sodium Hyaluronate (est. ≈2.5%).

A key benefit of antioxidants is their ability to reduce oxidative stress caused by free radicals and therefore prevent accelerated skin aging. Studies also show that antioxidants can protect against environmental damage such as UV radiation and pollution, and help reduce inflammation and skin redness.

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

Things to Be Aware Of: Circadia Vitamin C Reversal Serum

 
CreamScan identified a few things to consider before adding Circadia Vitamin C Reversal Serum 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 Circadia Vitamin C Reversal Serum 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 Circadia Vitamin C Reversal Serum is its potential anti-aging effects, please note that, according to CreamScan analysis, it currently has a zero anti-wrinkle rating.

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

While this does not categorically rule out the possibility that Magnesium Ascorbyl Phosphate 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 Circadia Vitamin C Reversal Serum

 
Here’s an overview of the pros and cons of Circadia Vitamin C Reversal Serum 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
✅ Rich in antioxidants that combat oxidative stress associated with accelerated skin aging and defend against environmental damage
 

⭕ Cons: 

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

Summary: Circadia Vitamin C Reversal Serum

 
Based on the ingredient list analysis, CreamScan AI suggests that Circadia Vitamin C Reversal Serum
, 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.
 
With its high antioxidant content, Circadia Vitamin C Reversal Serum helps protect against free radical damage and offers multiple benefits for all skin types, including preventing premature aging, defending against environmental damage, and calming inflammation.
 
That said, there are some things about Circadia Vitamin C Reversal Serum 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 Circadia Vitamin C Reversal Serum 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.

 

Ingredient Breakdown

Est. % Ingredient Origin Functions
80
6
4
2.5
2
1.5
1
1
Est. %
Water
Function:
Origin:
Magnesium Ascorbyl Phosphate
Function:
Origin:
Pentylene Glycol
Function:
Origin:
Sodium Hyaluronate
Function:
Origin:
Panthenol
Function:
Origin:
Caprylyl Glycol
Function:
Origin:
Phenoxyethanol
Function:
Origin:
Hexylene Glycol
Function:
Origin:

Ratings

All humectants
10.0
4
2.5
2
1.5
Benchmark
10
All occlusives
0.0
None
Benchmark
20
Moisturizing rating
5.0
Ingredient Est. % Benchmark Raiting
Humectancy All humectants 10 10
10.0
4
2.5
2
1.5
Occlusivity All occlusives 0.0 20
0.0
None
Moisturizing rating
5.0
Ingredient Est. % Benchmark Humectancy
4
2.5
2
1.5
All humectants 10 10
10
All humectants
10.0
4
2.5
2
1.5
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
- 6 -
Total
0
Magnesium Ascorbyl Phosphate
-
Ingredient anti-wrinkle power
n/a
when present at, %
-
in this formula, est. %
6
Anti-wrinkle rating
0
Ingredient Est. % Benchmark
Rich in Antioxidants
6
2.5
All antioxidants 8.5 3 Rich in antioxidants
All antioxidants
8.5
Magnesium Ascorbyl Phosphate
6
Sodium Hyaluronate
2.5
Benchmark
3
Ingredient Est. % Benchmark
Rich in Soothing
2
All soothing 2 5 No
All soothing
2
2
Benchmark
5

Ingredients explained

Water
Est. %80
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.
Magnesium Ascorbyl Phosphate
Est. %6
Function
Origin
Magnesium Ascorbyl PhosphateOne of the best-researched derivatives of vitamin C. It is more resistant to light and air and retains all the properties of ascorbic acid – antioxidant, collagen-boosting, and anti-pigmentation, but with less irritation.
Pentylene Glycol
Est. %4
Function
Origin
Pentylene Glycol

A naturally or synthetically derived preservative that exhibits effective antifungal and antibacterial traits. It also acts as a booster for more traditional preservatives. Pentylene glycol can also serve as a moisturizing humectant and solvent.

Sodium Hyaluronate
Est. %2.5
Function
Origin
Sodium Hyaluronate

A sodium salt of famous hyaluronic acid. A potent humectant that hydrates the skin, supports collagen function, and fills out small wrinkles. Sodium hyaluronate also offers soothing and antioxidant properties.

Panthenol
Est. %2
Function
Origin
PanthenolA popular soothing and moisturizing derivative of vitamin B5. Panthenol is particularly beneficial for dry, flaking, burned, or damaged skin. It is used to alleviate the symptoms of a rash, dermatitis, eczema, chapped lips, and sunburn.
Caprylyl Glycol
Est. %1.5
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.
Phenoxyethanol
Est. %1
Function
Origin
PhenoxyethanolThe most frequently used preservative in skincare. It is a clear, oil-like liquid synthetic substance that protects products from harmful bacteria and yeast, whilst still leaving skin microflora unharmed. It is confirmed by research to be harmless.
Hexylene Glycol
Est. %1
Function
Origin
Hexylene GlycolA multifunctional ingredient that is best known for its use as a solvent. It can dissolve both water-based ingredients and oils. For this reason, it can also function as an emulsifier, allowing oil and water ingredients to mix and remain stable.