Credentials Overnight Oxy-Complex Review

Credentials Overnight Oxy-Complex
3.3
/ 10
Moisturizing
6.6 Humectancy icon Humectancy
0.0 Occlusivity icon Occlusivity
0.1Anti-wrinkle icon/ 10
Anti-wrinkle
Rich
in Antioxidants
Review

Does Credentials Overnight Oxy-Complex Work?

 
According to CreamScan AI's analysis of the ingredient list, here’s what Credentials Overnight Oxy-Complex has to offer:
 
✅ Light moisturizing. It has a moisturizing rating of 3.3 out of 10.
✅ Slight anti-wrinkle effect: Credentials Overnight Oxy-Complex has an anti-wrinkle rating of 0.1 out of 10, so you may expect a positive, although insignificant, effect on wrinkles.
✅ Antioxidant protection

  

Key Benefits of Credentials Overnight Oxy-Complex

 
These are the key benefits you can expect from using Credentials Overnight Oxy-Complex:
 

🔵 Lightweight Purely Humectant Moisturizer Well-Suited for Oily Skin

According to CreamScan analysis, Credentials Overnight Oxy-Complex is lightly moisturizing, with a moisturizing rating of 3.3 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 high humectancy of 6.6 out of 10, primarily due to the high content of Butylene Glycol (est. ≈6.0%).

This humectant-rich product, when used alone as a moisturizer, is well-suited for oily skin, providing moderate 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 Enhancement for Any Skincare Routine

But it’s not limited to oily skin - such a humectant enhancement 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.

🟣 Slight Anti-Wrinkle Efficacy

According to CreamScan analysis, Credentials Overnight Oxy-Complex has a slight anti-wrinkle rating of 0.1 out of 10.

It contains one ingredient with proven anti-wrinkle efficacy: Glycolic Acid (est. ≈0.3%),
 a highly effective ingredient in peelings but with moderate anti-wrinkle efficacy in leave-on skincare products, as supported by a single clinical study. This study, involving 72 participants (Thibault et al.), demonstrated that a lotion with 5% GA reduced the fine wrinkling score by 6% after 34 days of use, compared to a vehicle (the same formulation without GA).
 
Among others, Credentials Overnight Oxy-Complex also contains Centella Asiatica Extract, an ingredient often marketed as effective in reducing wrinkles. However, the studies supporting the anti-wrinkle claims of Centella Asiatica Extract provide insufficient evidence of its efficacy according to CreamScan Research Evaluation Standards.
 
While this does not categorically rule out the possibility that Centella Asiatica Extract 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 contribute to 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 additional anti-wrinkle effects through its moisturizing action.
 

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

🍀 Rich in Skin-Protecting Antioxidants

We estimate that Credentials Overnight Oxy-Complex is rich (> 3%) in antioxidants, specifically Glycoproteins (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 AI model to incorporate anti-pigmentation, exfoliation and anti-acne ratings.

Things to Be Aware Of: Credentials Overnight Oxy-Complex

 
CreamScan AI identified a few things to consider before adding Credentials Overnight Oxy-Complex to your skincare routine:
 

⚠️ May Increase Skin Photosensitivity Due to Glycolic Acid

This product contains glycolic acid, a popular AHA known for its ability to exfoliate and brighten the skin. Its action works by removing dead skin cells, revealing new, more delicate skin that is particularly vulnerable to sun damage.

As a result, using products with glycolic acid, regardless of concentration, may increase the skin's sensitivity, making it more prone to sunburn or irritation when exposed to UV rays.

To counteract this increased sun sensitivity, apply a broad-spectrum sunscreen with at least SPF 30 daily to protect your skin during glycolic acid treatment.

❗️Please always check the manufacturer's instructions for using the product, either on their website or product label.

⚠️ 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 Credentials Overnight Oxy-Complex 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.

Pros & Cons of Credentials Overnight Oxy-Complex

 
Here’s an overview of the pros and cons of Credentials Overnight Oxy-Complex to help you decide if it’s the right choice for your skincare routine:
 

🟩 Pros:

✅ When used alone: Provides humectant-rich moisturizing well-suited for oily skin
✅ As part of a routine: A humectant moisturizing enhancement, beneficial for any skin type
✅ Lightweight texture
Provides slight anti-wrinkle efficacy
✅ Rich in antioxidants that combat oxidative stress associated with accelerated skin aging and defend against environmental damage
 

⭕ Cons: 

⚠️ May increase skin photosensitivity due to glycolic acid
⚠️ Only if used as a standalone moisturizer - it needs to be paired with occlusives to seal in humectants
   

Summary: Credentials Overnight Oxy-Complex

 
Based on the ingredient list analysis, CreamScan AI suggests that Credentials Overnight Oxy-Complex
, when used alone, delivers lightweight, humectant-rich moisturizing that is well-suited for oily skin. As part of a moisturizing routine, it provides a humectant enhancement, beneficial for all skin types.
 
Credentials Overnight Oxy-Complex contains ingredients with proven evidence of anti-wrinkle efficacy that may offer a slight anti-wrinkle effect. As a result, you can expect a positive, though relatively minimal, impact on wrinkles.
 
 
With its high antioxidant content, Credentials Overnight Oxy-Complex 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 Credentials Overnight Oxy-Complex 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.
 
This product contains glycolic acid, a popular AHA known for its ability to exfoliate and brighten the skin. However, glycolic acid - regardless of concentration - can increase skin sensitivity, making it more prone to sunburn or irritation when exposed to UV rays. Therefore, it’s recommended to use a broad-spectrum sunscreen with at least SPF 30 during glycolic acid treatment.
 
❗️ 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.

 

Ingredients

Est. % Ingredient Origin Functions
65
9
6
4
3
2.5
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
Est. %
Water
Function:
Origin:
SD Alcohol 40
Function:
Origin:
Butylene Glycol
Function:
Origin:
Pelargonium Capitatum Leaf Extract
Function:
Origin:
Spiraea Ulmaria Extract
Function:
Origin:
Glycoproteins
Function:
Origin:
Yucca Glauca Root Extract
Function:
Origin:
Clintonia Borealis Root Extract
Function:
Origin:
Centella Asiatica Extract
Function:
Origin:
Monarda Didyma Oil
Function:
Origin:
Salicylic Acid
Function:
Origin:
Glycolic Acid
Function:
Origin:
Lactic Acid
Function:
Origin:
Malic Acid
Function:
Origin:
Citric Acid
Function:
Origin:
Sodium Citrate
Function:
Origin:
Hydroxyethylcellulose
Function:
Origin:
Sodium Hydroxymethylglycinate
Function:
Origin:
Propylene Glycol
Function:
Origin:
Diazolidinyl Urea
Function:
Origin:
Methylparaben
Function:
Origin:
Propylparaben
Function:
Origin:

Ratings

All humectants
6.6
6
0.3
0.3
Benchmark
10
All occlusives
0.0
None
Benchmark
20
Moisturizing rating
3.3
Ingredient Est. % Benchmark Raiting
Humectancy All humectants 6.6 10
6.6
6
0.3
0.3
Occlusivity All occlusives 0.0 20
0.0
None
Moisturizing rating
3.3
Ingredient Est. % Benchmark Humectancy
6
0.3
0.3
All humectants 6.6 10
6.6
All humectants
6.6
6
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
1.5 /10 5 0.3 0.1
n/a
- 1.3 -
Total
0.1
Glycolic Acid
0.1
Ingredient anti-wrinkle power
1.5 /10
when present at, %
5
in this formula, est. %
0.3
Centella Asiatica Extract
-
Ingredient anti-wrinkle power
n/a
when present at, %
-
in this formula, est. %
1.3
Anti-wrinkle rating
0.1
Ingredient Est. % Benchmark
Rich in Antioxidants
2.5
1.3
All antioxidants 3.8 3 Rich in antioxidants
All antioxidants
3.8
Glycoproteins
2.5
Centella Asiatica Extract
1.3
Benchmark
3
Ingredient Est. % Benchmark
Rich in Soothing
3
1.3
0.3
All soothing 4.6 5 No
All soothing
4.6
3
1.3
0.3
Benchmark
5

Ingredients explained

Water
Est. %65
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.
SD Alcohol 40
Est. %9
Function
Origin
SD Alcohol 40
Butylene Glycol
Est. %6
Function
Origin
Butylene Glycol

A clear, colorless liquid humectant that draws moisture to the skin. The humectancy of butylene glycol, owed to its two hydroxyl groups, is quite considerable, although not as powerful as glycerin, which contains three hydroxyl groups.

Pelargonium Capitatum Leaf Extract
Est. %4
Function
Origin
Pelargonium Capitatum Leaf Extract
Spiraea Ulmaria Extract
Est. %3
Function
Origin
Spiraea Ulmaria ExtractA soothing and astringent extract derived from Meadowsweet flowers. It contains a plant version of anti-inflammatory salicylic acid - salicin.
Glycoproteins
Est. %2.5
Function
Origin
GlycoproteinsA broad term indicating a specific type of proteins, most likely of animal origin.
Yucca Glauca Root Extract
Est. %2
Function
Origin
Yucca Glauca Root Extract
Clintonia Borealis Root Extract
Est. %1.5
Function
Origin
Clintonia Borealis Root Extract
Centella Asiatica Extract
Est. %1.3
Function
Origin
Centella Asiatica ExtractAn extract from the leaves of the Gotu kola. It is used in skincare for its antioxidant, wound healing, anti-inflammatory, and anti-aging properties. It increases the production of collagen and hyaluronic acid in the skin.
Monarda Didyma Oil
Est. %1
Function
Origin
Monarda Didyma Oil
Salicylic Acid
Est. %0.3
Function
Origin
Salicylic AcidThis effective peeling and anti-inflammatory BHA is used as an anti-acne agent and works by breaking down the junctions between dead skin cells. This results in the peeling of dead skin and the unclogging of pores.
Glycolic Acid
Est. %0.3
Function
Origin
Glycolic Acid

The second most used AHA (after lactic acid) known for its potent exfoliating and smoothing effects. It increases skin cell turnover, which is beneficial for treating acne. When used in peels, glycolic acid has confirmed anti-wrinkle efficacy, though it is less effective in leave-on products like creams and serums.

Lactic Acid
Est. %0.3
Function
Origin
Lactic AcidThe most popular AHA in skincare and less irritating than glycolic acid. It can be naturally found in sour milk. It is a humectant moisturizing, pH stabilizing, and gently exfoliating ingredient, able to soften dry, cracked, and peeling skin.
Malic Acid
Est. %0.3
Function
Origin
Malic AcidA simple organic alpha-hydroxy acid (AHA) commonly found in unripe fruits. It is more gentle of an exfoliant when compared to the famous and potent glycolic and lactic acids.
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.
Sodium Citrate
Est. %0.3
Function
Origin
Sodium CitrateA salt of citric acid that has a salty and tart flavor and is used as a fragrance. It is mildly basic, meaning that its addition to a skincare product can adjust the pH upward.
Hydroxyethylcellulose
Est. %0.3
Function
Origin
HydroxyethylcelluloseA naturally-derived thickener that can form clear gel textures without the slimy feeling, unlike some other natural gel-formers.
Sodium Hydroxymethylglycinate
Est. %0.3
Function
Origin
Sodium HydroxymethylglycinateA preservative agent.
Propylene Glycol
Est. %0.3
Function
Origin
Propylene GlycolA clear, thick, odorless liquid of synthetic origin. Its main function is to stabilize cosmetic products exposed to varying temperatures. It is also a moderately strong humectant with similar properties to glycerin.
Diazolidinyl Urea
Est. %0.3
Function
Origin
Diazolidinyl UreaA synthetic preservative that is effective against most common bacteria. It is not considered broad-spectrum because it does not act against any type of yeast or mold. It is therefore commonly paired with antifungal preservatives.
Methylparaben
Est. %0.3
Function
Origin
MethylparabenA preservative that keeps a product unspoiled. There has been a lot of controversy surrounding parabens, although the concentrations found in cosmetic formulations are generally considered to be safe.
Propylparaben
Est. %0.3
Function
Origin
PropylparabenA preservative that keeps a product unspoiled. There has been a lot of controversy surrounding parabens, although the concentrations found in cosmetic formulations are generally considered to be safe.