Peter Thomas Roth Potent-C Niacinamide Discoloration Treatment Versus Haruharu Wonder Centella 4% TXA Dark Spot Go Away Serum
Updated on March 31, 2025
Overview
Cool Features
They both contain niacinamide and Vitamin C
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture
Free From
They both do not contain any harsh alcohols, common allergens, fragrances, oils, parabens or sulfates
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.
Ingredient Info
Peter Thomas Roth Potent-C Niacinamide Discoloration Treatment 42 ingredients
Haruharu Wonder Centella 4% TXA Dark Spot Go Away Serum 17 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
Peter Thomas Roth Potent-C Niacinamide Discoloration Treatment 42 ingredients
Haruharu Wonder Centella 4% TXA Dark Spot Go Away Serum 17 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Ingredients Side-by-side
Water
Skin ConditioningNiacinamide
Smoothing
Dimethyl Isosorbide
SolventIsononyl Isononanoate
EmollientTranexamic Acid
Astringent
Dimethicone
Emollient
Caprylic/Capric Triglyceride
MaskingAlpha-Arbutin
Antioxidant
Cetyl Alcohol
Emollient
Glyceryl Stearate
Emollient
Pentylene Glycol
Skin ConditioningPropanediol
SolventC9-12 Alkane
SolventCitric Acid
Buffering
Glyceryl Stearate Se
Emulsifying
Butyrospermum Parkii Butter
Skin Conditioning
Tetrahexyldecyl Ascorbate
Antioxidant
Kojic Acid
Antioxidant
Resveratrol
Antioxidant
Tocopheryl Acetate
Antioxidant
Diethylhexyl Syringylidenemalonate
Skin ProtectingHydrangea Arborescens Root Extract
Skin ConditioningMorus Alba Root Extract
BleachingScutellaria Lateriflora Extract
Skin ConditioningHydrolyzed Vegetable Protein
Skin ConditioningSilica
Abrasive
Sodium Stearoyl Glutamate
CleansingCoco-Caprylate/Caprate
Emollient
Dimethiconol
Emollient
Glycerin
Humectant
Sodium Phytate
Potassium Sorbate
Preservative
Sodium Benzoate
Masking
Caprylyl Glycol
EmollientHexylene Glycol
EmulsifyingPolysorbate 20
Emulsifying
Ceteth-20
CleansingSteareth-20
CleansingPolyacrylate Crosspolymer-6
Emulsion StabilisingPEG-75 Stearate
Titanium Dioxide
Cosmetic Colorant
Phenoxyethanol
Preservative
Water, Niacinamide, Dimethyl Isosorbide, Isononyl Isononanoate, Tranexamic Acid, Dimethicone, Caprylic/Capric Triglyceride, Alpha-Arbutin, Cetyl Alcohol, Glyceryl Stearate, Pentylene Glycol, Propanediol, C9-12 Alkane, Citric Acid, Glyceryl Stearate Se, Butyrospermum Parkii Butter, Tetrahexyldecyl Ascorbate, Kojic Acid, Resveratrol, Tocopheryl Acetate, Diethylhexyl Syringylidenemalonate, Hydrangea Arborescens Root Extract, Morus Alba Root Extract, Scutellaria Lateriflora Extract, Hydrolyzed Vegetable Protein, Silica, Sodium Stearoyl Glutamate, Coco-Caprylate/Caprate, Dimethiconol, Glycerin, Sodium Phytate, Potassium Sorbate, Sodium Benzoate, Caprylyl Glycol, Hexylene Glycol, Polysorbate 20, Ceteth-20, Steareth-20, Polyacrylate Crosspolymer-6, PEG-75 Stearate, Titanium Dioxide, Phenoxyethanol
Water
Skin ConditioningPropanediol
SolventNiacinamide 4%
Smoothing
Tranexamic Acid 4%
Astringent
Butylene Glycol
Humectant
1,2-Hexanediol
Skin ConditioningPyrus Communis Fruit Extract
Skin ConditioningSodium Polyacryloyldimethyl Taurate
Emulsion StabilisingEthylhexylglycerin
Skin ConditioningPolyglyceryl-10 Laurate
Skin Conditioning
Madecassoside
Antioxidant
Centella Asiatica Extract
Cleansing
Asiaticoside
Antioxidant
Ascorbic Acid
Antioxidant
Asiatic Acid
Skin ConditioningMadecassic Acid
Skin Conditioning
Sodium Ascorbyl Phosphate
Antioxidant
Water, Propanediol, Niacinamide 4%, Tranexamic Acid 4%, Butylene Glycol, 1,2-Hexanediol, Pyrus Communis Fruit Extract, Sodium Polyacryloyldimethyl Taurate, Ethylhexylglycerin, Polyglyceryl-10 Laurate, Madecassoside, Centella Asiatica Extract, Asiaticoside, Ascorbic Acid, Asiatic Acid, Madecassic Acid, Sodium Ascorbyl Phosphate
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.
So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.
You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterNiacinamide has emerged as an all-star ingredient due to its many benefits.
It is known to treat acne by reducing inflammation. It also helps fade dark-spots and strengthen the skin by promoting the growth of the ceramide barrier.
Other benefits include smoothing wrinkles and minimizing redness.
The cherry on top? Niacinamide can also help build keratin, a protein that keeps skin firm.
When incorporating niacinamide into your routine, look out for concentration amounts. Typically, 5% niacinamide provides benefits such as fading dark spots. However, if you have sensitive skin, it is better to begin with a smaller concentration.
Niacinamide can be mixed with other ingredients to boost benefits. For instance, it has shown to be effective when used with copper, folic acid, and zinc to treat acne.
Learn more about NiacinamideTranexamic Acid is best used for treating hyperpigmentation, discoloration, and melasma. It can also help build a stronger skin barrier.
Once applied, Tranexamic Acid starts decreasing inflammation from UV exposure. Tranexamic Acid also prevents our skin cells from meeting the pigment production cells.
Its brightening property makes it great at reducing the appearance of acne scars and marks.
Fun fact: Tranexamic Acid is also a medication used to reduce heavy bleeding.
This acid is derived from lysine, an amino acid.
Learn more about Tranexamic AcidPropanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.
It’s often used to:
Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent.
Learn more about PropanediolIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Peter Thomas Roth Potent-C Niacinamide Discoloration Treatment 42 ingredients
Haruharu Wonder Centella 4% TXA Dark Spot Go Away Serum 17 ingredients
Reviews
Here's what our community thinks
Peter Thomas Roth Potent-C Niacinamide Discoloration Treatment 42 ingredients
Haruharu Wonder Centella 4% TXA Dark Spot Go Away Serum 17 ingredients
When I first used this product I didn’t think it was doing anything but I continued to use it because it didn’t break me out. about 3-4 weeks later i’m looking back at old picture of my skin and it really does make a difference with dark spots. I was and currently using panoxyl 4% so maybe that played somewhat of a part but I do recommend this product for acne scars, dark spots but i didn’t find Show more
It’s been 3-4 months already since I started using this and it’s a great product. It’s lightweight, it didn’t irritate my skin at all and I also noticed that my skin really got brighter over time. However, it did little to nothing to fade my hyperpigmentation :( I’m guessing that my case is just really stubborn
