Peter Thomas Roth Potent-C Vitamin C Power Serum Review

Peter Thomas Roth Potent-C Vitamin C Power Serum
4.1
/ 10
Moisturizing
5.2 Humectancy icon Humectancy
3.0 Occlusivity icon Occlusivity
Rich
in Antioxidants
Review

Does Peter Thomas Roth Potent-C Vitamin C Power Serum Work?

 
According to CreamScan AI's analysis of the ingredient list, here’s what Peter Thomas Roth Potent-C Vitamin C Power Serum has to offer:
 
Moderate moisturizing. It has a moisturizing rating of 4.1 out of 10.
✅ Antioxidant protection

  

Key Benefits of Peter Thomas Roth Potent-C Vitamin C Power Serum

 
These are the key benefits you can expect from using Peter Thomas Roth Potent-C Vitamin C Power Serum:
 

🔵 Lightweight Moisturizer Suitable for Combination and Oily Skin

According to CreamScan analysis, Peter Thomas Roth Potent-C Vitamin C Power Serum is quite moisturizing, with a moisturizing rating of 4.1 out of 10.

Is it more humectant or occlusive? This product has relatively comparable levels of humectancy and occlusivity: a moderate humectancy of 5.2 out of 10, primarily due to the substantial concentration of Butylene Glycol (est. ≈4.0%), and a moderate occlusivity of 3.0 out of 10, mainly due to the high content of Caprylyl Methicone (est. ≈3.1%) and C10-18 Triglycerides (est. ≈2.2%).

This type of moisturizer is suitable for people with oily and combination skin who want essential hydration in a relatively lightweight, non-greasy formula. It combines a substantial amount of humectants with a limited amount of occlusive ingredients to enhance moisturizing efficacy without feeling too heavy.

💧 A Humectant Add-on for Any Skincare Routine

But it’s not limited to combination and oily skin - since it contains a moderate amount of humectants, such a humectant add-on will also positively contribute to the moisturizing efficacy of any skincare routine when used as a step before applying the main moisturizer.

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

🍀 Rich in Skin-Protecting Antioxidants

We estimate that Peter Thomas Roth Potent-C Vitamin C Power Serum is rich (> 3%) in antioxidants, specifically Tetrahexyldecyl Ascorbate (est. ≈20.0%), Tocopheryl Acetate (est. ≈3.0%) and Ferulic Acid (est. ≈2.0%).

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: Peter Thomas Roth Potent-C Vitamin C Power Serum

 
CreamScan AI identified a few things to consider before adding Peter Thomas Roth Potent-C Vitamin C Power Serum to your skincare routine:
 

⚠️ Questionable anti-wrinkle efficacy

If one of your main reasons for choosing Peter Thomas Roth Potent-C Vitamin C Power Serum is its potential anti-aging effects, please note that, according to CreamScan analysis, it currently has a zero anti-wrinkle rating.

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

While this does not categorically rule out the possibility that Tetrahexyldecyl Ascorbate 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 Peter Thomas Roth Potent-C Vitamin C Power Serum

 
Here’s an overview of the pros and cons of Peter Thomas Roth Potent-C Vitamin C Power Serum to help you decide if it’s the right choice for your skincare routine:
 

🟩 Pros:

✅ When used alone: Provides moderate humectant moisturizing suitable for combination and oily skin
✅ As part of a routine: A humectant moisturizing enhancement, 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: 

⚠️ Questionable anti-wrinkle efficacy
   

Summary: Peter Thomas Roth Potent-C Vitamin C Power Serum

 
Based on the ingredient list analysis, CreamScan AI suggests that Peter Thomas Roth Potent-C Vitamin C Power Serum
, when used alone, delivers  lightweight, moderate humectant moisturizing, suitable for combination and oily skin. As part of a moisturizing routine, it provides a subtle humectant enhancement, beneficial for all skin types.
 
With its high antioxidant content, Peter Thomas Roth Potent-C Vitamin C Power 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 Peter Thomas Roth Potent-C Vitamin C Power Serum worth noting.
 
If one of your main reasons for considering Peter Thomas Roth Potent-C Vitamin C Power 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.

 

Ingredients

Est. % Ingredient Origin Functions
55
20
4
3.2
3.1
3
2.2
2.1
2
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
0.3
0.3
Est. %
Water
Function:
Origin:
Tetrahexyldecyl Ascorbate
Function:
Origin:
Butylene Glycol
Function:
Origin:
C9-12 Alkane
Function:
Origin:
Caprylyl Methicone
Function:
Origin:
Tocopheryl Acetate
Function:
Origin:
C10-18 Triglycerides
Function:
Origin:
Polyglyceryl-6 Distearate
Function:
Origin:
Ferulic Acid
Function:
Origin:
Squalane
Function:
Origin:
Hydrogenated Lecithin
Function:
Origin:
Propanediol
Function:
Origin:
Sodium Hyaluronate
Function:
Origin:
Zingiber Officinale (Ginger) Root Extract
Function:
Origin:
Curcuma Longa (Turmeric) Root Extract
Function:
Origin:
Panax Ginseng Root Extract
Function:
Origin:
Jojoba Esters
Function:
Origin:
Leuconostoc/Radish Root Ferment Filtrate
Function:
Origin:
Coco-Caprylate/Caprate
Function:
Origin:
Glycerin
Function:
Origin:
Cetyl Alcohol
Function:
Origin:
Polyglyceryl-3 Beeswax
Function:
Origin:
Xanthan Gum
Function:
Origin:
Disodium EDTA
Function:
Origin:
Mica
Function:
Origin:
Ethylhexylglycerin
Function:
Origin:
Potassium Sorbate
Function:
Origin:
Sodium Benzoate
Function:
Origin:
Phenoxyethanol
Function:
Origin:

Ratings

All humectants
5.2
4
0.3
0.3
0.3
0.3
Benchmark
10
All occlusives
5.9
3.1
2.2
0.3
0.3
Benchmark
20
Moisturizing rating
4.1
Ingredient Est. % Benchmark Raiting
Humectancy All humectants 5.2 10
5.2
4
0.3
0.3
0.3
0.3
Occlusivity All occlusives 5.9 20
3.0
3.1
2.2
0.3
0.3
Moisturizing rating
4.1
Ingredient Est. % Benchmark Humectancy
4
0.3
0.3
0.3
0.3
All humectants 5.2 10
5.2
All humectants
5.2
4
0.3
0.3
0.3
0.3
Benchmark
10
Ingredient Est. % Benchmark Occlusivity
3.1
2.2
0.3
0.3
All occlusives 5.9 20
3.0
All occlusives
5.9
3.1
2.2
0.3
0.3
Benchmark
20
Ingredient
Ingredient anti-wrinkle power
when present at, %
in this formula est. %
Rating
n/a
- 20 -
Total
0
Tetrahexyldecyl Ascorbate
-
Ingredient anti-wrinkle power
n/a
when present at, %
-
in this formula, est. %
20
Anti-wrinkle rating
0
Ingredient Est. % Benchmark
Rich in Antioxidants
20
3
2
0.3
0.3
0.3
0.3
All antioxidants 26.2 3 Rich in antioxidants
All antioxidants
26.2
Tetrahexyldecyl Ascorbate
20
Tocopheryl Acetate
3
Ferulic Acid
2
Sodium Hyaluronate
0.3
Zingiber Officinale (Ginger) Root Extract
0.3
Curcuma Longa (Turmeric) Root Extract
0.3
Panax Ginseng Root Extract
0.3
Benchmark
3
Ingredient Est. % Benchmark
Rich in Soothing
0.3
0.3
0.3
0.3
All soothing 1.2 5 No
All soothing
1.2
0.3
0.3
0.3
0.3
Benchmark
5

Ingredients explained

Water
Est. %55
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.
Tetrahexyldecyl Ascorbate
Est. %20
Function
Origin
Tetrahexyldecyl AscorbateA lipid-soluble form of vitamin C that is more stable and less irritating than ascorbic acid. According to a recent clinical study, THDA has all the capabilities of regular vitamin C, including anti-wrinkle and anti-pigment activity.
Butylene Glycol
Est. %4
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.

C9-12 Alkane
Est. %3.2
Function
Origin
C9-12 Alkane
Caprylyl Methicone
Est. %3.1
Function
Origin
Caprylyl MethiconeA liquid silicone with occlusive moisturizing properties. Being compatible with natural oils is a challenge for most silicones, but caprylyl methicone plays well with all types of oils.
Tocopheryl Acetate
Est. %3
Function
Origin
Tocopheryl Acetate

An antioxidant derivative of tocopherol (vitamin E). It helps to protect cells from free radicals and UV damage through the conversion to active vitamin E in the skin. It is more stable than tocopherol.

C10-18 Triglycerides
Est. %2.2
Function
Origin
C10-18 TriglyceridesAn occlusive ingredient that helps lock in moisture. It provides a soft, smooth feel and melts at body temperature.
Polyglyceryl-6 Distearate
Est. %2.1
Function
Origin
Polyglyceryl-6 Distearate
Ferulic Acid
Est. %2
Function
Origin
Ferulic AcidA plant-based phenolic acid with powerful and scientifically proven antioxidant properties. It enhances the effects of vitamins C and E, as well as the UV protective effects of sunscreens.
Squalane
Est. %0.3
Function
Origin
SqualaneAn occlusive moisturizing and emollient compound that forms part of the skin’s sebum. The main source of squalane had always been shark liver. Now, however, it is manufactured synthetically or derived from plant oils, such as olive and peanut oil.
Hydrogenated Lecithin
Est. %0.3
Function
Origin
Hydrogenated LecithinA version of plain lecithin that has been saturated with hydrogen atoms. This ingredient can be derived from plants, like soy or sunflower, from egg yolks, or made synthetically. Its major function is to emulsify water and oils.
Propanediol
Est. %0.3
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.
Sodium Hyaluronate
Est. %0.3
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.

Zingiber Officinale (Ginger) Root Extract
Est. %0.3
Function
Origin
Zingiber Officinale (Ginger) Root ExtractA fragrant and anti-inflammatory extract derived from ginger roots. It is a major part of Chinese traditional medicine. In can increase blood circulation, which helps with skin healing and skin metabolism.
Curcuma Longa (Turmeric) Root Extract
Est. %0.3
Function
Origin
Curcuma Longa (Turmeric) Root ExtractAn extract derived from the thick roots of curcuma (turmeric), a famous yellow spice and a major ingredient in curry powder. It is used in skincare for its proven antioxidant and anti-inflammatory properties.
Panax Ginseng Root Extract
Est. %0.3
Function
Origin
Panax Ginseng Root ExtractDerived from the roots of the Korean Ginseng, this extract contains a mixture of antioxidant and soothing ginsenosides which are proven to reduce inflammation and treat eczema. The root is a major part of Chinese traditional medicine.
Jojoba Esters
Est. %0.3
Function
Origin
Jojoba EstersA mixture of various wax esters from jojoba oil. It is used in skincare products as a fantastic emollient, soothing, and occlusive moisturizing agent that won't leave a sticky, oily feeling on the skin.
Leuconostoc/Radish Root Ferment Filtrate
Est. %0.3
Function
Origin
Leuconostoc/Radish Root Ferment FiltrateA biotechnological fermentation ingredient that is created by feeding radish root to Leuconostoc kimchii. It allegedly contains organic acids and a mixture of peptides known as bacteriocins – which have antimicrobial activity.
Coco-Caprylate/Caprate
Est. %0.3
Function
Origin
Coco-Caprylate/CaprateA naturally-derived emollient ester. It is a blend of caprylates and caprates and, relative to other emollients, is lightweight and dry on the skin. As a result, coco-caprylate/caprate serves as a natural alternative to volatile silicones.
Glycerin
Est. %0.3
Function
Origin
Glycerin

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

Cetyl Alcohol
Est. %0.3
Function
Origin
Cetyl AlcoholA waxy solid fatty alcohol derived from palm oil. It is most commonly used as a co-emulsifier and affects the final aesthetic of the product, leaving a soft and silky feeling on the skin. Cetyl alcohol is also used as a viscosity controlling agent.
Polyglyceryl-3 Beeswax
Est. %0.3
Function
Origin
Polyglyceryl-3 Beeswax
Xanthan Gum
Est. %0.3
Function
Origin
Xanthan GumA natural multi-functional ingredient that originates from fermented sugars. Xanthan gum acts as a viscosity-building agent to thicken skincare products. It is also an excellent stabilizer and works well to hold other ingredients together.
Disodium EDTA
Est. %0.3
Function
Origin
Disodium EDTAA synthetic chelator that helps to maintain the look and smell of a product by 'locking up' troublesome metal ions.
Mica
Est. %0.3
Function
Origin
MicaA mineral powder made up of silicates with several functions (the main one being as a colorant). It has a shimmery appearance, making it highly desirable in certain cosmetic products. Mica also helps the product to apply more smoothly.
Ethylhexylglycerin
Est. %0.3
Function
Origin
EthylhexylglycerinA preservative booster derived from glycerin. It is commonly paired with other preservatives to improve their efficacy. Ethylhexylglycerin is also a humectant due to its chemical base of glycerin.
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 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.
Phenoxyethanol
Est. %0.3
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.